{"title":"Metabolic Activity","description":null,"products":[{"product_id":"quantichrom-citrate-synthase-assay-kit-bht15600033","title":"QuantiChrom™ Citrate Synthase Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eDirect assays of citrate synthase activity in cell lysates, tissues, and other biological samples. Linear detection range 0.50 to 120 U\/L citrate synthase activity in 96-well plate assay. Simple and convenient. The procedure involves. The assay uses OD412nm for signal readout. Compatible sample input includes Cell lysates, tissues, and other biological samples. Typical stated assay timing is 10 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD412nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Cell lysates, tissues, and other biological samples, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 0.50 U\/L for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Sensitive and accurate. Linear detection range 0.50 to 120 U\/L citrate synthase activity in 96-well plate assay.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Simple and convenient. The procedure involves adding a single working reagent and reading the optical density at 5 min and 10 min at room temperature; High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Available format information for this listing includes 100 Tests in 96-well plate.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of citrate synthase within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003eCITRATE SYNTHASE\u003c\/i\u003e(E.C. 2.3.3.1) is a pivotal enzyme that initiates the tricarboxylic acid (TCA) cycle. It catalyzes the condensation reaction between acetyl-CoA and oxaloacetic acid, yielding citric acid. Citrate synthase levels of cells and tissue are used as a guide in determining mitochondrial dysfunctions and cellular metabolism. High levels of citrate synthase activity indicate increased metabolic activity or cellular energy production. This can occur in situations where cells are actively metabolizing substrates for energy production, such as during periods of increased physical activity or in tissues with high energy demands, like muscle tissue. Conversely, low levels of citrate synthase activity may suggest reduced metabolic activity or energy production. This could be seen in situations where cellular metabolism is slowed down, such as during periods of rest or in conditions associated with mitochondrial dysfunction. Simple, direct and automation-ready procedures for measuring citrate synthase activity are very desirable. BioAssay Systems’ QuantiChrom™ Citrate Synthase Assay is based on an improved Ellman method, in which coenzyme A thiol produced by the action of citrate synthase forms a yellow color with 5,5′-dithiobis (2-nitrobenzoic acid). The intensity of the product color, measured at 412 nm, is proportionate to the enzyme activity in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 412 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 0.50 U\/L.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 10 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eShort assay timing and plate compatibility support time-course or repeated-measure collection plans when handling is kept consistent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify citrate synthase in cell lysates, tissues by OD412 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched cell lysates, tissues handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in cell lysates, tissues across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests in 96-well plate","offer_id":53238312403309,"sku":"DCST-100","price":489.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/DCSTfig.jpg?v=1776668349"},{"product_id":"cytotoxicity-control-reagent-saponin-bht15600005","title":"Cytotoxicity Control Reagent (Saponin)","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eUseful as a cytotoxic control agent in the CQBL-05K and CQMT-500 Cell Viability Assay Kits. IC 50 = 0.002 wt%. Compatible sample input includes biological samples.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes biological samples, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAvailable format information for this listing includes 50 mg Saponin.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of cytotoxicity control (saponin) within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eMatched standards, blanks, and replicate wells are typically used to improve interpretability across batches and sample matrices.\u003c\/li\u003e\n  \u003cli\u003eMatched standards, blanks, and replicate wells are typically used to improve interpretability across batches and sample matrices.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePrepare control-treated samples for paired use with compatible assay-kit plates.\u003c\/li\u003e\n  \u003cli\u003eBenchmark assay response against defined control conditions in replicate wells.\u003c\/li\u003e\n  \u003cli\u003eOptimize reagent concentration and incubation windows for plate-based comparisons.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"50 mg Saponin","offer_id":53238313746797,"sku":"CTTX-050","price":124.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/BASRTfig_f2638be9-a3e0-49b0-9521-d31cb8d0d678.jpg?v=1776668350"},{"product_id":"quantichrom-isocitrate-dehydrogenase-assay-kit-bht15600061","title":"QuantiChrom™ Isocitrate Dehydrogenase Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor quantitative colorimetric kinetic determination of isocitrate dehydrogenase activity and evaluation of drug effects on its metabolism. The assay uses OD565nm for signal readout. Compatible sample input includes Plasma, serum, tissue and culture media, etc. Typical stated assay timing is 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD565nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Plasma, serum, tissue and culture media, etc, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 0.1 U\/L for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Linear detection range (20 µL sample): 0.1 to 100 U\/L for 30 min reaction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient and high-throughput. Homogeneous “mix-incubate-measure” type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of isocitrate dehydrogenase within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003e ISOCITRATE DEHYDROGENASE \u003c\/i\u003e(IDH) is an enzyme that catalyzes the interconversion of isocitrate and a-ketoglutarate. There are three IDH isoforms: IDH3 uses the cofactor NAD\u003csup\u003e+\u003c\/sup\u003eand catalyzes the third step in the citric acid cycle, while IDH1 and IDH2 use the cofactor NADP\u003csup\u003e+\u003c\/sup\u003eand catalyze the same reaction outside the citric acid cycle. This kit measures the activity of the NADP\u003csup\u003e+\u003c\/sup\u003eisoforms. Mutations in IDH1 and IDH2 have been linked with various brain tumors and acute myeloid leukemia. BioAssay Systems’ non-radioactive, colorimetric IDH assay is based on the reduction of the tetrazolium salt MTT in an NADPH-coupled enzymatic reaction to a reduced form of MTT which exhibits an absorption maximum at 565 nm. The increase in absorbance at 565 nm is directly proportional to the enzyme activity.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 565 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 0.1 U\/L.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify isocitrate dehydrogenase in plasma, serum, tissue and culture media by OD565 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched plasma, serum, tissue and culture media handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in plasma, serum, tissue and culture media across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238314041709,"sku":"DIDH-100","price":489.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/DIDHfig.jpg?v=1776668351"},{"product_id":"ldh-cytotoxicity-assay-kit-bht15600001","title":"LDH Cytotoxicity Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor rapid quantitative determination of cytotoxicity based on lactate dehydrogenase released into cell culture medium. Evaluation of toxic compounds, toxins, detergents, environmental pollutants and physical treatment on cell lysis. The assay uses OD500nm for signal readout. Compatible sample input includes Cell culture. Typical stated assay timing is 20 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD500nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Cell culture, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorkflow timing:\u003c\/strong\u003e The listed assay time of 20 min helps frame batch planning, replicate handling, and plate throughput.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Safe. Non-radioactive assay (cf. chromium release assay).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Fast. The whole procedure takes 20 min; Robust and amenable to HTS. Single reagent, “mix-incubate-measure” type assay. High-throughput assay in 96-well plates allows the simultaneous processing of tens of thousands of samples per day. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of ldh cytotoxicity within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eLactate dehydrogenase (LDH) is an oxidoreductase which catalyzes the interconversion of lactate and pyruvate. Cytotoxic compounds often compromise cell membrane integrity by inducing apoptosis or necrosis. LDH is a stable cytosolic enzyme that upon membrane damage is released into the cellular environment. Therefore, LDH is often measured to evaluate the presence of tissue or cell damage. The colorimetric LDH release assay is a simple and robust method to assess cytotoxic effects on cells by measuring the activity of LDH in the cell culture supernatant. The assay is based on the reduction of a tetrazolium salt to a formazan dye.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 500 nm).\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 20 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify cell viability or cytotoxicity in cultured cells by OD500 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare dose-response effects of compounds across treated cell-culture wells.\u003c\/li\u003e\n  \u003cli\u003eMonitor cytotoxicity time-courses after toxin, detergent, or drug exposure in culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238314238317,"sku":"C2LD-100","price":149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/C2LDfig.jpg?v=1776668352"},{"product_id":"cellquanti-blue-cell-viability-assay-kits-bht15600003","title":"CellQuanti-Blue™ Cell Viability Assay Kits","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eHomogeneous assay for cell viability, proliferation, cytotoxcity and high-throughput screen for anticancer agents. The assay uses FL530\/590nm for signal readout. Compatible sample input includes Cell culture. Typical stated assay timing is Assay takes 1-5 hrs, hands-on time 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e FL530\/590nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Cell culture, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 100 cells for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Safe. Non-radioactive assay (cf. 3 H-thymidine incorporation assay).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Sensitive and accurate. As low as 100 cells can be accurately quantified; Time efficient. High-throughput assay in 96-well and 384-well plates allows the simultaneous processing tens of thousands of samples per day. Available format information for this listing includes 10000 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of cell viability within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eThis homogeneous assay involves simply adding a single reagent, the CellQuanti-Blue™ reagent, to the cell culture and measuring the fluorescence intensity (excitation wavelength = 530 – 570 nm, emission wavelength = 590 – 620 nm) after an incubation step. The CellQuanti-Blue™ reagent, like other resazurin-based assays such as the Alamar Blue reagent, utilizes the redox dye resazurin which is not fluorescent,but upon reduction by metabolically active cells is converted into a highly fluorescent product (resorufin). Living cells can readily reduce this non-toxic reagent and the resulting increase in fluorescence intensity can be conveniently monitored using a fluorescence spectrophotometer or plate reader. Nonviable cells have no metabolic capacity and, thus, will not reduce the dye. Therefore, the fluorescence intensity observed in this assay is a true measure of the viable cells. The CellQuanti-Blue™ reagent has been optimized for maximum sensitivity, reproducibility and long shelf-life. The homogeneous cell-based assay can be performed in multi-well plates. The reagent is compatible with all culture media and with all liquid handling systems for high-throughput screening applications in 96-well and 384-well plates. Applications include cell proliferation, cytotoxicity and apoptosis.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eFluorescent (FL 530\/590 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 100 cells.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: Assay takes 1-5 hrs, hands-on time 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify cell viability or cytotoxicity in cultured cells by FL530\/590 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare dose-response effects of compounds across treated cell-culture wells.\u003c\/li\u003e\n  \u003cli\u003eMonitor cytotoxicity time-courses after toxin, detergent, or drug exposure in culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"10000 Tests","offer_id":53238314336621,"sku":"CQBL-10K","price":369.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CQBLfig.jpg?v=1776668352"},{"product_id":"enzylight-cytotoxicity-assay-kit-bht15600141","title":"EnzyLight™ Cytotoxicity Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor rapid, bioluminescent luciferin\/luciferase based assay for cell viability, proliferation, cytotoxcity and high-throughput screen for anticancer agents. The assay uses Luminescence for signal readout. Compatible sample input includes Cells. Typical stated assay timing is 2 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e Luminescence supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Cells, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 50 cells for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Safe. Non-radioactive assay (cf. 3H-thymidine incorporation assay).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Sensitive and accurate. As low as 50 cells can be quantified; Homogeneous and convenient. “Mix-incubate-measure” type assay. No wash and reagent transfer steps are involved. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of enzylight cytotoxicity within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003e Adenosine 5’-triphosphate \u003c\/i\u003e(ATP) is the chemical energy for cellular metabolism and is often referred to as “energy currency” of the cell. ATP is produced only in living cells during photosynthesis and cellular respiration and consumed in cellular processes including biosynthetic reactions, motility and cell division. It is a key indicator of cellular activity and has been utilized as a measure of cell viability and cytotoxicity in research and drug discovery. BioAssay Systems’ EnzyLight™ Cytotoxicity Assay Kit provides a rapid method to measure intracellular ATP, cell viability and cytotoxicity. The single working reagent lyses cells to release ATP, which, in the presence of luciferase, immediately reacts with the Substrate D-luciferin to produce light. The light intensity is a direct measure of intracellular ATP concentration and hence number of living cells. This non-radioactive, homogeneous cell-based assay can be conveniently performed in microplates. The reagent is compatible with all culture media and liquid handling systems for high-throughput screening applications in 96-well and 384-well plates.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eLuminescence.\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 50 cells.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 2 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify cell viability or cytotoxicity in cultured cells by Luminescence readout.\u003c\/li\u003e\n  \u003cli\u003eCompare dose-response effects of compounds across treated cell-culture wells.\u003c\/li\u003e\n  \u003cli\u003eMonitor cytotoxicity time-courses after toxin, detergent, or drug exposure in culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238314959213,"sku":"ECTX-100","price":339.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/ECTXfig.jpg?v=1776668351"},{"product_id":"enzychrom-isocitrate-assay-kit-bht15600134","title":"EnzyChrom™ Isocitrate Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor quantitative colorimetric determination of isocitrate and evaluation of drug effects on its metabolism. The assay uses OD565nm for signal readout. Compatible sample input includes Food, beverage, biological samples (e.g. cell lysate, tissue homogenate, serum, etc.). Typical stated assay timing is 10 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD565nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Food, beverage, biological samples (e.g. cell lysate, tissue homogenate, serum, etc.), which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 20 µM for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Linear detection range (20 µL sample): 20 to 5000 µM for 10 min reaction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient and high-throughput. Homogeneous “mix-incubate-measure” type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of isocitrate within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eISOCITRATE (ISOCITRIC ACID) is a substrate in the citric acid (TCA) cycle. Isocitrate is formed by the isomerization of citrate catalyzed by the enzyme aconitase. Isocitrate is oxidized by isocitrate dehydrogenase producing α-ketoglutarate and generating NADPH. Isocitrate is commonly found in many fruits and vegetables and their processed products. Industrially, isocitrate is used as a marker to identify the quality and purity of fruit juices. BioAssay Systems’ isocitrate assay measures the NADPH generated from the oxidation of isocitrate. The NADPH converts the dye to an intense violet color with an absorption maximum at 565 nm. The increase in absorbance at 565 nm is directly proportional to the isocitrate concentration\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 565 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 20 µM.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 10 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify isocitrate in food, beverage, biological samples (cell by OD565 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched food, beverage, biological samples (cell handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in food, beverage, biological samples (cell across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238315221357,"sku":"ECIC-100","price":489.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/ECICfig.jpg?v=1776668350"},{"product_id":"cellquanti-blue-cell-viability-assay-kits-bht15600002","title":"CellQuanti-Blue™ Cell Viability Assay Kits","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eHomogeneous assay for cell viability, proliferation, cytotoxcity and high-throughput screen for anticancer agents. The assay uses FL530\/590nm for signal readout. Compatible sample input includes Cell culture. Typical stated assay timing is Assay takes 1-5 hrs, hands-on time 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e FL530\/590nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Cell culture, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 100 cells for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Safe. Non-radioactive assay (cf. 3 H-thymidine incorporation assay).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Sensitive and accurate. As low as 100 cells can be accurately quantified; Time efficient. High-throughput assay in 96-well and 384-well plates allows the simultaneous processing of tens of thousands of samples per day. Available format information for this listing includes 5000 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of cell viability within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eThis homogeneous assay involves simply adding a single reagent, the CellQuanti-Blue™ reagent, to the cell culture and measuring the fluorescence intensity (excitation wavelength = 530 – 570 nm, emission wavelength = 590 – 620 nm) after an incubation step. The CellQuanti-Blue™ reagent, like other resazurin-based assays such as the Alamar Blue reagent, utilizes the redox dye resazurin which is not fluorescent, but upon reduction by metabolically active cells is converted into a highly fluorescent product (resorufin). Living cells can readily reduce this non-toxic reagent and the resulting increase in fluorescence intensity can be conveniently monitored using a fluorescence spectrophotometer or plate reader. Nonviable cells have no metabolic capacity and, thus, will not reduce the dye. Therefore, the fluorescence intensity observed in this assay is a true measure of the viable cells. The CellQuanti-Blue™ reagent has been optimized for maximum sensitivity, reproducibility and long shelf-life. The homogeneous cell-based assay can be performed in multi-well plates. The reagent is compatible with all culture media and with all liquid handling systems for high-throughput screening applications in 96-well and 384-well plates. Applications include cell proliferation, cytotoxicity and apoptosis.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eFluorescent (FL 530\/590 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 100 cells.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: Assay takes 1-5 hrs, hands-on time 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify cell viability or cytotoxicity in cultured cells by FL530\/590 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare dose-response effects of compounds across treated cell-culture wells.\u003c\/li\u003e\n  \u003cli\u003eMonitor cytotoxicity time-courses after toxin, detergent, or drug exposure in culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"5000 Tests","offer_id":53238315614573,"sku":"CQBL-05K","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CQBLfig_3f8b1f4f-120c-475e-8acc-896e2338e18d.jpg?v=1776668352"},{"product_id":"cellquanti-mtt-cell-viability-assay-kits-bht15600004","title":"CellQuanti-MTT™ Cell Viability Assay Kits","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eHomogeneous assay for cell viability, proliferation, cytotoxcity and evaluation of anticancer agents. The assay uses OD570nm for signal readout. Compatible sample input includes Cell culture. Typical stated assay timing is Assay takes 5 hrs, hands-on time 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD570nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Cell culture, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 950 cells for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Safe. Non-radioactive assay (cf. 3 H-thymidine incorporation assay).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Sensitive and accurate. As low as 950 cells can be accurately quantified; Fast. A high-throughput assay using 96-well plates allows the simultaneous processing of tens of thousands of samples per day. Available format information for this listing includes 500 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of cell viability within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eThe study of cell proliferation and cell viability requires the accurate quantification of the number of viable cells in cell culture. Therefore, assays for calculating cell viability are necessary for optimizing cell culture conditions, evaluating cell growth factors and nutrients, discovering novel antibiotics and anti-cancer drugs, evaluating toxic effects of environmental pollutants and cell-mediated toxicity and studying programmed cell death (apoptosis). The CellQuanti-MTT™ assay kit provides a convenient, sensitive, quantitative and reliable assay for determining the number of viable cells in a given culture. This homogeneous colorimetric assay is based on the conversion of a tetrazolium salt MTT, a pale yellow substrate, to formazan, a purple dye. This cellular reduction reaction involves the pyridine nucleotide cofactors NADH\/NADPH and is only catalyzed by living cells. The formazan product has low aqueous solubility and is present as purple crystals. Dissolving the resulting formazan with a solubilization buffer permits the convenient quantification of product formation. The intensity of the product color, measured at 550 – 620 nm, is directly proportional to the number of living cells in the culture. Reagents in the kit have been carefully formulated and optimized for sensitivity, assay robustness and automation.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 570 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 950 cells.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: Assay takes 5 hrs, hands-on time 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify cell viability or cytotoxicity in cultured cells by OD570 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare dose-response effects of compounds across treated cell-culture wells.\u003c\/li\u003e\n  \u003cli\u003eMonitor cytotoxicity time-courses after toxin, detergent, or drug exposure in culture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"500 Tests","offer_id":53238316269933,"sku":"CQMT-500","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/CQMTfig.jpg?v=1776668350"},{"product_id":"enzyfluo-isocitrate-assay-kit-bht15600152","title":"EnzyFluo™ Isocitrate Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor quantitative fluorimetric determination of isocitrate and evaluation of drug effects on its metabolism. The assay uses FL530\/585 nm for signal readout. Compatible sample input includes Food, beverage, biological samples (e.g. cell lysate, tissue homogenate, serum, etc.). Typical stated assay timing is 10 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e FL530\/585 nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Food, beverage, biological samples (e.g. cell lysate, tissue homogenate, serum, etc.), which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 0.6 µM for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Linear detection range (20 µL sample): 0.6 to 500 µM for 10 min reaction.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient and high-throughput. Homogeneous “mix-incubate-measure” type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of enzyfluo isocitrate within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003e ISOCITRATE \u003c\/i\u003e(ISOCITRIC ACID) is a substrate in the citric acid (TCA) cycle. Isocitrate is formed by the isomerization of citrate catalyzed by the enzyme aconitase. Isocitrate is oxidized by isocitrate dehydrogenase producing α-ketoglutarate and generating NADPH. Isocitrate is commonly found in many fruits and vegetables and their processed products. Industrially, isocitrate is used as a marker to identify the quality and purity of fruit juices. BioAssay Systems’ isocitrate assay measures the NADPH generated from the oxidation of isocitrate. The NADPH reduces a probe into a highly fluorescent product. The fluorescence intensity of this product, measured at λex\/em = 530\/585 nm, is proportional to the isocitrate concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eFluorescent (FL 530\/585 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 0.6 µM.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 10 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify enzyfluo isocitrate in food, beverage, biological samples (cell by FL530\/585 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched food, beverage, biological samples (cell handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in food, beverage, biological samples (cell across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238317580653,"sku":"EFIC-100","price":459.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/EFICfig.jpg?v=1776668356"},{"product_id":"enzychrom-fumarate-assay-kit-bht15600158","title":"EnzyChrom™ Fumarate Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor quantitative determination of fumarate and drug effects on its metabolism. The assay uses OD565nm for signal readout. Compatible sample input includes Food, beverage and other biological samples (e.g. cell lysate, tissue homogenate, serum). Typical stated assay timing is 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD565nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Food, beverage and other biological samples (e.g. cell lysate, tissue homogenate, serum), which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 5 µM for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Use of 20 µL sample. Linear detection range 0.005 to 2 mM fumarate in a 96-well plate assay.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient. The procedure involves adding a single working reagent and reading the optical density after 30 minutes. Room temperature assay. No 37°C heater is needed; High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of fumarate within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003e FUMARATE\u003c\/i\u003e, or Fumaric Acid, is one of the key components in the TCA cycle and is used by cells to form ATP. Human skin when exposed to sunlight will naturally produce fumaric acid. Fumarate is used as an additive by the food and beverage industries. Fumaric acid esters are also used to treat psoriasis. Increased urinary fumarate may be due to impaired Krebs cycle function, a defect in the enzyme fumarase, or mitochondrial function. BioAssay Systems fumarate assay kit is based on fumarase-catalyzed hydration of fumarate to malate. The malate is then oxidized by malate dehydrogenase generating NADH which reduces a formazan (MTT) dye. The intensity of the product color, measured at 565 nm is proportional to the fumarate concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 565 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 5 µM.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify fumarate in food, beverage (cell lysate, tissue by OD565 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched food, beverage (cell lysate, tissue handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in food, beverage (cell lysate, tissue across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238318301549,"sku":"EFUM-100","price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/EFUMfig.jpg?v=1776668358"},{"product_id":"enzychrom-malate-assay-kit-bht15600188","title":"EnzyChrom™ Malate Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor quantitative determination of L-malate (L-malic acid) and drug effects on malate metabolism. The assay uses OD565nm for signal readout. Compatible sample input includes Malate in food, juice, beverage, and other agricultural products. Typical stated assay timing is 15 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD565nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Malate in food, juice, beverage, and other agricultural products, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 0.02 mM for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Use of 20 µL sample. Linear detection range 0.02 to 2 mM L-malate in 96-well plate assay.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient. The procedure involves adding a single working reagent and reading the optical density at a time of 15 minutes. Room temperature assay. No 37°C heater is needed; High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of malate within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003e L-malate\u003c\/i\u003e, or L-Malic acid, is a dicarboxylic acid that is made by all living organisms and plays an important role in the Calvin and Krebs Cycle. It is a source of CO\u003csub\u003e2\u003c\/sub\u003efor the Calvin cycle in plants and is also an intermediate that forms from fumarate in the Krebs Cycle. Malate is frequently used in food and beverage industries as an additive in products such as wine, beer, candies, etc. BioAssay Systems L-malate assay kit is based on malate dehydrogenase catalyzed oxidation of malate in which the formed NADH reduces a formazan (MTT) reagent. The intensity of the product color, measured at 565 nm is proportional to the malate concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 565 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 0.02 mM.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 15 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify malate in malate in food, juice, beverage by OD565 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched malate in food, juice, beverage handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in malate in food, juice, beverage across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238318530925,"sku":"EMAL-100","price":479.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/EMALfig.jpg?v=1776668361"},{"product_id":"enzychrom-malate-dehydrogenase-assay-kit-bht15600190","title":"EnzyChrom™ Malate Dehydrogenase Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor quantitative determination of L-malate dehydrogenase enzyme activity and drug effects on malate dehydrogenase metabolism. The assay uses OD565nm for signal readout. Compatible sample input includes Biological samples (e.g. plasma, serum, erythrocytes, tissue, and culture media). Typical stated assay timing is 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD565nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Biological samples (e.g. plasma, serum, erythrocytes, tissue, and culture media), which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of 0.5 U\/L for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Linear detection range (20 µL sample): 0.5 to 65 U\/L for 20 min reaction at 37°C.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient and high-throughput. Homogeneous “mix-incubate-measure” type assay. Can be readily automated on HTS liquid handling systems for processing thousands of samples per day. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of malate dehydrogenase within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003e Malate dehydrogenase \u003c\/i\u003e(MDH) (EC 1.1.1.37) is an enzyme that reversibly catalyzes the oxidation of L-malate to oxaloacetate in the presence of NAD. There are 2 isoforms in eukaryotic cells: MDH1 and MDH2. MDH1 is found in the cytoplasm and plays a key part in the malate-aspartate shuttle for transporting malate into the mitochondria. MDH2 is a mitochondrial enzyme that participates in the TCA cycle that reversibly converts L-malate into oxaloacetate. Higher MDH activities are found in some neurodegenerative diseases such as Alzheimer’s disease. BioAssay Systems’ non-radioactive, colorimetric MDH assay is based on the reduction of the tetrazolium salt MTT in an NADH-coupled enzymatic reaction to a reduced form of MTT which exhibits an absorption maximum at 565 nm. The increase in absorbance at 565 nm is proportional to the enzyme activity.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 565 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit: 0.5 U\/L.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify malate dehydrogenase in plasma, serum, erythrocytes by OD565 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched plasma, serum, erythrocytes handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in plasma, serum, erythrocytes across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238318793069,"sku":"EMDH-100","price":519.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/EMDHfig.jpg?v=1776668361"},{"product_id":"enzychrom-oxaloacetate-assay-kit-bht15600198","title":"EnzyChrom™ Oxaloacetate Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor quantitative determination of oxaloacetate and evaluation of drug effects on its metabolism. The assay uses OD570nm, or FL530\/585nm for signal readout. Compatible sample input includes Plasma, serum, tissue and culture media. Typical stated assay timing is 20 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD570nm, or FL530\/585nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Plasma, serum, tissue and culture media, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of OD, FL: 4, 1 µM for interpreting low-signal samples.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAvailable format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of oxaloacetate within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003e Oxaloacetate \u003c\/i\u003e(OAA) is an intermediate in the citric acid cycle and participates in gluconeogenesis. OAA is formed by the oxidation of malate, by deamidation of aspartate or by condensation of CO\u003csub\u003e2\u003c\/sub\u003ewith pyruvate or phosphoenolpyruvate. BioAssay Systems’ Oxaloacetate Assay Kit provides a simple, direct, and automation-ready procedure for measuring oxaloacetate concentration. OAA is converted into pyruvate which is then oxidized with the conversion of the dye into a colored and fluorescent form. The color intensity of the oxidized dye at 570 nm or fluorescence intensity at λex\/em = 530\/585 nm is directly proportional to the oxaloacetate concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 570 nm) or Fluorescent (FL 530\/585 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit(s): Colorimetric: 4 µM \/ Fluorescent: 1 µM. Additional source wording: OD, FL: 4, 1 µM.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 20 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n  \u003cli\u003eShort assay timing and plate compatibility support time-course or repeated-measure collection plans when handling is kept consistent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify oxaloacetate in plasma, serum, tissue and culture media by OD570 nm, or FL530\/585 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched plasma, serum, tissue and culture media handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in plasma, serum, tissue and culture media across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238318924141,"sku":"EOAA-100","price":469.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/EOAAfig.jpg?v=1776668361"},{"product_id":"enzychrom-succinate-assay-kit-bht15600210","title":"EnzyChrom™ Succinate Assay Kit","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor quantitative determination of succinate (succinic acid) in food, beverage, agricultural products, and other biological samples. The assay uses OD570nm, FL530\/585nm for signal readout. Compatible sample input includes succinate in food, beverage, agricultural products, and other biological samples. Typical stated assay timing is 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e OD570nm, FL530\/585nm supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes succinate in food, beverage, agricultural products, and other biological samples, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAnalytical range context:\u003c\/strong\u003e The supplied specifications include a stated detection limit of Colorimetric assay: 10 µM; Fluorimetric assay: 2 µM for interpreting low-signal samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Use a 20 µL sample. Linear detection range from 10 to 400 µM for colorimetric assays and 2 to 40 µM for fluorimetric assays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient. The procedure involves adding a single working reagent and reading the absorbance or fluorescence after 30 minutes. Room temperature assay. No 37°C heater is needed; High-throughput. Can be readily automated as a high-throughput 96-well plate assay for thousands of samples per day. Available format information for this listing includes 100 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of succinate within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003e\u003ci\u003eSUCCINATE\u003c\/i\u003e, or succinic acid, can be found in all plants and animal tissues. It is an intermediate in the citric acid cycle and plays an important role in intracellular energy generation. Succinate is widely used as a flavoring agent in the food, beverage, and pharmaceutical industries due to its low toxicity.BioAssay Systems′ succinate assay provides a simple, one-step assay for measuring succinate. In this assay, succinate is converted to pyruvate which reacts with specific reagents and dye to form a colored product. The color intensity at 570 nm or fluorescence at Fex\/em = 530\/585 nm of the reaction product is directly proportional to the succinate concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eColorimetric (OD 570 nm) or Fluorescent (FL 530\/585 nm).\u003c\/p\u003e\n\n\u003ch2\u003eDetection limit and analytical sensitivity\u003c\/h2\u003e\n\u003cp\u003eReported detection limit(s): Colorimetric: 10 µM; \/ Fluorescent: 2 µM. Additional source wording: Colorimetric assay: 10 µM; Fluorimetric assay: 2 µM.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: 30 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe product notes emphasize multi-sample throughput, making it relevant for screening-oriented and larger batch comparison studies.\u003c\/li\u003e\n  \u003cli\u003eShort assay timing and plate compatibility support time-course or repeated-measure collection plans when handling is kept consistent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eQuantify succinate in succinate in food, beverage, agricultural by OD570 nm, FL530\/585 nm readout.\u003c\/li\u003e\n  \u003cli\u003eCompare treatment or phenotype groups using matched succinate in food, beverage, agricultural handling.\u003c\/li\u003e\n  \u003cli\u003eMonitor time-course or pre\/post changes in succinate in food, beverage, agricultural across study conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"100 Tests","offer_id":53238319612269,"sku":"ESNT-100","price":679.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/ESNTfig.jpg?v=1776668362"},{"product_id":"quantiquik-l-lactic-acid-quick-test-strips-bht15600246","title":"QuantiQuik™ L-Lactic Acid Quick Test Strips","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor rapid, direct determination of L-lactic acid concentrations in food and beverage samples as well as biological samples. Semi-quantitative measurement between 0-360 mg\/L (undiluted) L-lactic acid. Convenient. No expensive lab equipment. The assay uses Visual for signal readout. Compatible sample input includes Wine, beer, milk, etc. Typical stated assay timing is Approximately 15 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e Visual supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Wine, beer, milk, etc, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorkflow timing:\u003c\/strong\u003e The listed assay time of Approximately 15 min helps frame batch planning, replicate handling, and plate throughput.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Use of 20 or 100 µL sample. Semi-quantitative measurement between 0-360 mg\/L (undiluted) L-lactic acid.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient. No expensive lab equipment is needed; Sample treatment and assay can be performed in under 15 minutes. Available format information for this listing includes 10 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of quantiquik l-lactic acid quick test strips within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eL-LACTIC ACID, or L-lactate, is generated by lactate dehydrogenase (LDH) under hypoxic or anaerobic conditions. L-lactic acid is added to many foods and beverages to give them a tart flavor. Increased levels of L-lactic acid in milk, egg, and fruit juices can be an indication of spoilage. In the wine industry, increasing levels of L-lactic acid and decreasing levels of L-malic acid are monitored (Malolactic fermentation). In this process, the overall acidity of the wine is reduced and can lead to the improvement of the flavor of the wine.BioAssay Systems QuantiQuik™ L-Lactic Acid Test Strips are based on L-lactate dehydrogenase catalyzed oxidation of L-lactate in which the formed NADH reduces a chromogenic reagent. The intensity of product color is directly proportional to L-lactate concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eVisual.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: Approximately 15 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n  \u003cli\u003eShort assay timing and plate compatibility support time-course or repeated-measure collection plans when handling is kept consistent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eScreen quantiquik l-lactic acid quick test strips in wine, beer, milk using strip-based detection.\u003c\/li\u003e\n  \u003cli\u003eCompare threshold or presence-call outcomes across matched sample groups.\u003c\/li\u003e\n  \u003cli\u003eMonitor routine or field-collected batches with consistent collection timing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"10 Tests","offer_id":53238319841645,"sku":"QQLLAC10","price":84.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/QQLLACfig.jpg?v=1776668362"},{"product_id":"quantiquik-d-lactic-acid-quick-test-strips-bht15600241","title":"QuantiQuik™ D-Lactic Acid Quick Test Strips","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor rapid, direct determination of D-lactic acid concentrations in food and beverage samples as well as biological samples. The assay uses Visual for signal readout. Compatible sample input includes Wine, beer, milk, etc. Typical stated assay timing is Approximately 15 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e Visual supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Wine, beer, milk, etc, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorkflow timing:\u003c\/strong\u003e The listed assay time of Approximately 15 min helps frame batch planning, replicate handling, and plate throughput.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Use of 20 or 100 µL sample. Semi-quantitative measurement between 0-180 mg\/L (undiluted) D-lactic acid.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient. No expensive lab equipment needed; Sample treatment and assay can be performed in under 15 minutes. Available format information for this listing includes 10 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of quantiquik d-lactic acid quick test strips within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eLACTIC ACID, or lactate, is generated by lactate dehydrogenase (LDH) under hypoxic or anaerobic conditions. D-lactate is produced in only minor quantities in animals and measuring for D-lactate in animal samples is a means to determine the presence of bacterial infection. Furthermore, since D-lactate is a specific indicator of bacteria fermentation, its measurement can be used to determine the freshness of milk, meat and fruit juices. Elevated levels of D-lactate in wine is an indication of lactic acid bacteria contamination. BioAssay Systems QuantiQuik™ D-Lactate Test Strips are based on D-Lactate dehydrogenase catalyzed oxidation of D-lactate in which the formed NADH reduces a chromogenic reagent. The intensity of product color, is directly proportional to D-lactate concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eVisual.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: Approximately 15 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n  \u003cli\u003eShort assay timing and plate compatibility support time-course or repeated-measure collection plans when handling is kept consistent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eScreen quantiquik d-lactic acid quick test strips in wine, beer, milk using strip-based detection.\u003c\/li\u003e\n  \u003cli\u003eCompare threshold or presence-call outcomes across matched sample groups.\u003c\/li\u003e\n  \u003cli\u003eMonitor routine or field-collected batches with consistent collection timing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"10 Tests","offer_id":53238320071021,"sku":"QQDLAC10","price":84.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/QQDLACfig.jpg?v=1776668362"},{"product_id":"quantiquik-oxalate-quick-test-strips-bht15600248","title":"QuantiQuik™ Oxalate Quick Test Strips","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor rapid, direct determination of oxalate concentrations in biological samples. For Research Use Only (not for medical decisions). The assay uses Visual for signal readout. Compatible sample input includes Serum, plasma, urine, fruits or vegetables, etc. Typical stated assay timing is Approximately 10 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e Visual supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Serum, plasma, urine, fruits or vegetables, etc, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorkflow timing:\u003c\/strong\u003e The listed assay time of Approximately 10 min helps frame batch planning, replicate handling, and plate throughput.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Use of 10 µL sample. Semi-quantitative measurement between 0-1.5 mg\/dL or 0-170 µM (undiluted) Oxalate.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient. No expensive plate or cuvette readers required; Sample treatment and assay can be performed in under 10 minutes. Available format information for this listing includes 10 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of quantiquik oxalate quick test strips within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eOxalate, or Oxalic Acid, is a metabolic breakdown product of the Kreb’s Cycle in eukaryotes and the glyoxylate cycle in other microorganisms. Typically present in the urine of humans and other mammals, oxalate concentration can be used as a measure of kidney function. A high level of oxalate is an indicator for kidney stones, which are primarily made of the insoluble salt calcium oxalate. Measuring oxalate is more accurate than measuring calcium as a marker for kidney stones because calcium is excreted at high concentrations even in normal urine.BioAssay Systems’ QuantiQuik™ Oxalate Quick Test Strips are based on the enzymatic oxidation of oxalate coupled with a color reaction in one step. The intensity of product color is directly proportional to the oxalate concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eVisual.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: Approximately 10 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n  \u003cli\u003eShort assay timing and plate compatibility support time-course or repeated-measure collection plans when handling is kept consistent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eScreen quantiquik oxalate quick test strips in serum, plasma, urine, fruits or vegetables using strip-based detection.\u003c\/li\u003e\n  \u003cli\u003eCompare threshold or presence-call outcomes across matched sample groups.\u003c\/li\u003e\n  \u003cli\u003eMonitor routine or field-collected batches with consistent collection timing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"10 Tests","offer_id":53238320234861,"sku":"QQOXLT10","price":84.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/QQOXLTfig.jpg?v=1776668363"},{"product_id":"quantiquik-malic-acid-quick-test-strips-bht15600247","title":"QuantiQuik™ Malic Acid Quick Test Strips","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eFor rapid, direct determination of malic acid concentrations in food and beverage samples as well as biological samples. The assay uses Visual for signal readout. Compatible sample input includes Wine, beer, milk, etc. Typical stated assay timing is Approximately 15 min.\u003c\/p\u003e\n\n\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReadout format:\u003c\/strong\u003e Visual supports plate-based signal acquisition and consistent comparison across matched samples.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSample compatibility:\u003c\/strong\u003e The stated sample scope includes Wine, beer, milk, etc, which is useful when aligning matrix type with calibration and control design.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWorkflow timing:\u003c\/strong\u003e The listed assay time of Approximately 15 min helps frame batch planning, replicate handling, and plate throughput.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeature emphasis:\u003c\/strong\u003e Fast and sensitive. Use of 20 or 100 µL sample. Semi-quantitative measurement between 0-500 mg\/L (undiluted) malic acid.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAdditional feature notes highlight Convenient. No expensive lab equipment needed; Sample treatment and assay can be performed in under 15 minutes. Available format information for this listing includes 10 Tests.\u003c\/p\u003e\n\n\u003ch2\u003eBiological background\u003c\/h2\u003e\n\u003cp\u003eThis product is centered on measurement of quantiquik malic acid quick test strips within the matrices described for the assay. In practice, datasets from this type of format are typically interpreted by comparing relative signal, activity, or abundance across matched control and experimental groups rather than relying on a single value in isolation. Careful alignment of sample matrix, incubation window, and calibration strategy is important when comparing results across plates, operators, or study days.\u003c\/p\u003e\n\n\u003ch2\u003eMore details\u003c\/h2\u003e\n\u003cp\u003eL-MALIC ACID, or L-malate, is a dicarboxylic acid that is made by all living organisms and plays an important role in the Calvin and Krebs Cycle. Malic acid is frequently used in food and beverage industries as an additive in products such as wine, beer, candies, etc. It can be used as an acidity regulator, preservative, or simply added for flavor. In the wine industry, decreasing levels of L-malic acid and increasing levels of L-Lactic Acid are monitored during malolactic fermentation. As L-malic acid is converted to L-lactic acid, the overall acidity of the wine is reduced which can lead to the improvement of the flavor of the wine.BioAssay Systems QuantiQuik™ L-Malic Acid Test Strips are based on L-malate dehydrogenase catalyzed oxidation of L-malic acid in which the formed NADH reduces a chromogenic reagent. The intensity of the product color is directly proportional to the L-malic acid concentration in the sample.\u003c\/p\u003e\n\n\u003ch2\u003eDetection method\u003c\/h2\u003e\n\u003cp\u003eVisual.\u003c\/p\u003e\n\n\u003ch2\u003eProcedures and timing\u003c\/h2\u003e\n\u003cp\u003eStated procedure or timing information: Approximately 15 min.\u003c\/p\u003e\n\n\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003ePlate-based quantification and side-by-side group comparison remain central use cases for this assay format.\u003c\/li\u003e\n  \u003cli\u003eThe description supports intervention-focused study designs in which researchers compare baseline and perturbed conditions.\u003c\/li\u003e\n  \u003cli\u003eShort assay timing and plate compatibility support time-course or repeated-measure collection plans when handling is kept consistent.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eCommon research applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eScreen quantiquik malic acid quick test strips in wine, beer, milk using strip-based detection.\u003c\/li\u003e\n  \u003cli\u003eCompare threshold or presence-call outcomes across matched sample groups.\u003c\/li\u003e\n  \u003cli\u003eMonitor routine or field-collected batches with consistent collection timing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eInterpretation is usually strongest when signal changes are assessed alongside matrix-matched controls, replicate agreement, and the assay's stated analytical window.\u003c\/p\u003e\n\n\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eMatrix composition, background signal, and sample handling can influence apparent response; compare like-with-like whenever possible.\u003c\/li\u003e\n  \u003cli\u003eUse appropriate blanks, controls, and replicate wells to distinguish biological differences from plate, reagent, or handling variability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- Sources (internal):\n- Product Description column\n- Key Features column\n- More Details column\n- Method \/ Sample Type(s) \/ Assay Time \/ Detection Limit \/ Detection Method columns\n- Procedures column\n- Screening Services column\n--\u003e","brand":"BioAssay Systems","offers":[{"title":"10 Tests","offer_id":53238320595309,"sku":"QQMALA10","price":84.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/QQMALAfig.jpg?v=1776668362"}],"url":"https:\/\/www.ebiohippo.com\/collections\/rc-cell-biology-metabolic-activity.oembed","provider":"BioHippo","version":"1.0","type":"link"}