| Field | Specification |
|---|---|
| UniProt # | |
| Applications | |
| Sensitivity | |
| Detection range | |
| Detection method | |
| Assay time | |
| Storage | |
| Shipping | |
| Catalog no. (Mfr.) | |
| Main SKU |
Scientific Background
This ELISA kit applies to the in vitro quantitative determination of Human OXA concentrations in serum, plasma and other biological fluids.
Assay Principle
This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with Human OXA. During the reaction, Human OXA in the sample or standard competes with a fixed amount of Human OXA on the solid phase supporter for sites on the Biotinylated Detection Ab specific to Human OXA. Excess conjugate and unbound sample or standard are washed away, and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well and incubated. Then a TMB substrate solution is added to each well. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns from blue to yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of Human OXA in tested samples can be calculated by comparing the OD of the samples to the standard curve.
Performance Specifications
| Sensitivity | 37.5 pg/mL |
|---|---|
| Detection Range | 62.5-4000 pg/mL |
| Total Assay Time | 2 h 30 min |
| Compatible Sample Types | Serum, plasma and other biological fluids |
| Species Reactivity | Human |
| Detection Method | Competitive |
| Precision (CV) | Both intra-CV and inter-CV are < 10%. |
| Recovery Rate | 80%-120% |
| Storage | 2-8℃,12 months |
✓ Research-Grade Validation
Specificity
This kit recognizes Human OXA in samples.No significant cross-reactivity or interference between Human OXA and analogues was observed
Safety & Regulatory
Handle reagents in accordance with institutional biosafety guidelines. Refer to the Safety Data Sheet (SDS) for complete hazard and handling information. Contains components that may require special disposal procedures per local regulations.
This kit is validated for use with Serum, plasma and other biological fluids. For unlisted matrices (e.g., tissue lysate, urine), perform a spike-and-recovery experiment to confirm assay performance before generating reportable data. Sample dilution in the kit's provided diluent is recommended to minimize matrix interference.
The minimum detectable concentration (sensitivity) of this kit is 37.5 pg/mL. Values below this threshold should be reported as below the limit of detection (<LOD) and should not be extrapolated from the standard curve.
The total assay time from sample addition to absorbance reading is approximately 2 h 30 min, including all incubation, wash, and substrate steps. Hands-on time is typically 1–2 hours; most steps involve passive plate incubation. Plan the assay as a single uninterrupted session for best results.
Standard components of this Competitive ELISA Kit typically include: pre-coated microplate (96-well strip format), lyophilized or liquid recombinant OXA standard, detection antibody, streptavidin-HRP conjugate, TMB substrate, stop solution, wash buffer concentrate, and sample/standard diluent. Refer to the kit insert or datasheet for the exact component list and storage requirements.
This kit uses colorimetric (TMB/HRP) detection and requires a standard microplate absorbance reader capable of measuring at 450 nm. A reference wavelength of 570 nm or 630 nm is recommended to reduce background. No specialized fluorescence or luminescence reader is needed. Ensure the instrument is calibrated and the plate is clean and free of condensation before reading.
Tissue samples may contain endogenous or exogenous proteases during processing, leading to degradation of extracted proteins. Therefore, it's necessary to add protease inhibitors during processing to ensure the integrity of target proteins. If customers can keep samples cold and handle them quickly during processing, omitting the protease inhibitor may not have a significant effect. After preparation, samples should be tested promptly or immediately aliquoted and frozen at -20°C or -80°C.
What is the range of enzyme activity of your IL-2 freeze-dried powder
What is the principle of adding stop solution to stop color reaction in ELISA experiment?
Can’t Find What You’re Looking For? We can help you source the best match or customize an ELISA solution for your study. Options may include alternative target synonyms, different species reactivity, sample type/matrix compatibility (serum/plasma/lysate/supernatant), assay format (sandwich/competitive), sensitivity/range, detection chemistry (colorimetric/fluorescent/chemiluminescent), plate format (pre-coated/uncoated, strips vs full plate), and bulk or custom packaging. Click Talk to a Scientist to submit a request form, email us at support@biohippo.com, or explore our Research Services for additional support. Our team will be in contact with you shortly.
A proprietary black cumin oil extract (Nigella sativa) (BlaQmax?) modulates stress-sleep-immunity axis safely: Randomized double-blind placebo-controlled study (2023) Frontiers in Nutrition. 10.3389/fnut.2023.1152680
Evaluation of leptin, insulin, orexin, neuropeptide y (NPY) levels in postmortem CSF samples in suicide deaths (2025) JOURNAL OF AFFECTIVE DISORDERS. 10.1016/j.jad.2025.04.015
Influence of Intermittent Fasting on Body Composition, Physical Performance, and the Orexinergic System in Postmenopausal Women: A Pilot Study (2025) Nutrients. 10.3390/nu17071121
Evaluation of Orexin-A Salivary Levels and its Correlation with Attention After Non-invasive Brain Stimulation in Female Volleyball Players (2024) Sports Medicine-Open. 10.1186/s40798-024-00698-5
Serum Levels of Neuropeptides in Epileptic Encephalopathy With Spike-and-Wave Activation in Sleep (2023) PEDIATRIC NEUROLOGY. 10.1016/j.pediatrneurol.2023.04.017
Ketogenic diet–induced changes in methylation status and neuropeptide signaling: relationships between S-adenosylmethionine (AdoMet), orexin-A, and metabolic health (2025) Frontiers in Physiology. 10.3389/fphys.2025.1719549
The Potential Benefits of a Novel Food Supplement Based on Cannabis Sativa, Boswellia, and Fish Oil for Pain and Inflammation in Physical Activity: Unraveling the Role of Orexin-A Modulation (2025) Sports. 10.3390/sports13070199
Circulating levels of ghrelin, galanin, and orexin-A orexigenic neuropeptides in obstructive sleep apnea syndrome (2021) Sleep and Breathing. 10.1007/s11325-021-02514-w
Decreased serum orexin A levels in drug-naive children with attention deficit and hyperactivity disorder (2019) NEUROLOGICAL SCIENCES. 10.1007/s10072-018-3692-8
Correlation of serum Orexin-A level with cognitive function and serum inflammatory cytokines in epileptic patients (2023) American Journal of Translational Research. PMID:37434836
