| Field | Specification |
|---|---|
| Target | |
| Alternative names | Interleukin-6; IL-6; B-cell stimulatory factor 2; BSF-2; CTL differentiation factor; CDF; Hybridoma growth factor; Interferon beta-2; IFN-beta-2; IL6; IFNB2 |
| Gene ID | |
| UniProt # | |
| Reactivity | |
| Applications | |
| Immunogen | Expression system for standard: E.coli; Immunogen sequence: P29-M212 |
| Expression system | |
| Expression region | |
| Assay type | |
| Sample type(s) | Cell Culture Supernatant, Serum, Plasma |
| Sensitivity | |
| Detection range | |
| Assay time | |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Assay Principle
This sandwich ELISA quantifies human interleukin-6 (gene IL6) in cell culture supernatants, serum and plasma ( heparin, EDTA, citrate). Strips are pre-coated with a capture antibody. After the sample is added, a biotinylated detection antibody binds the captured protein, and an avidin–biotin–peroxidase complex supplies the enzyme. TMB develops color in proportion to the bound target; the reaction is stopped and read at 450 nm, and concentrations are read from the standard curve.
Interleukin-6 (IL-6) is a multifunctional cytokine released by macrophages, dendritic cells and many other cells during infection and tissue injury. It binds IL-6R and then the signaling subunit gp130, activating JAK–STAT3 through classic or trans-signaling. IL-6 drives the acute phase response, B-cell differentiation and Th17 development, and it is one of the most widely measured inflammatory markers.
Kit Components
| Anti-Human IL6 Pre-coated 96-well strip microplate | 1 plate (96 wells) |
|---|---|
| Human IL6 Standard | 2 vials, 10 ng/tube |
| Human IL6 Biotinylated antibody (100x) | 100 µL |
| Avidin-Biotin-Peroxidase Complex (100x) | 100 µL |
| Sample Diluent | 30 mL |
| Antibody Diluent | 12 mL |
| Avidin-Biotin-Peroxidase Diluent | 12 mL |
| Color Developing Reagent (TMB) | 10 mL |
| Stop Solution | 10 mL |
| Wash Buffer (25x) | 20 mL |
| Adhesive plate sealers | 4 |
Also required (not supplied): microplate reader for 450 nm; incubator; automated plate washer (optional); precision pipettes for 0.5 µL through 1 mL volumes of aqueous solutions; multichannel pipettes (recommended for many samples); deionized or distilled water; 500 mL graduated cylinders; test tubes for dilution.
Kit components are not sold separately.
Performance Data
| Species | Human |
|---|---|
| Sample types | Cell culture supernatants, serum and plasma ( heparin, EDTA, citrate) |
| Assay range | 4.69 pg/mL–300 pg/mL |
| Sensitivity | <0.3 pg/mL |
| Standard | Recombinant human IL6 (Pro29–Met212), expressed in E. coli |
| Cross-reactivity | None detected against related proteins in supplier testing |
| Intra-assay CV | 4.4–7.4% (3 samples, n = 16 each) |
| Inter-assay CV | 4.5–8.6% (3 samples, n = 24 each) |
| Format | 96 wells, removable strips |
Sample dilution: start at 1:1. In the supplier’s tests, serum and plasma samples measured below the lowest standard.
Example standard curve (OD450, pg/mL): 0 = 0.021; 4.7 = 0.103; 9.4 = 0.161; 18.8 = 0.281; 37.5 = 0.577; 75 = 0.972; 150 = 1.488; 300 = 2.049. Run a new standard curve on every plate.
Storage & Handling
Store at 4 °C for up to 6 months or −20 °C for up to 12 months. Avoid repeated freeze–thaw cycles. Ships on gel ice and tolerates up to 3 days at room temperature; freeze on arrival.
Safety
Sample data
| Concentration (pg/ml) | 0 | 4.7 | 9.4 | 18.8 | 37.5 | 75 | 150 | 300 |
| O.D. | 0.021 | 0.103 | 0.161 | 0.281 | 0.577 | 0.972 | 1.488 | 2.049 |
Intra/inter assay consistency
| Intra-Assay Precision | Inter-Assay Precision | |||||
|---|---|---|---|---|---|---|
| Sample | 1 | 2 | 3 | 1 | 2 | 3 |
| n | 16 | 16 | 16 | 24 | 24 | 24 |
| Mean (pg/ml) | 10 | 38 | 145 | 9 | 37 | 130 |
| Standard deviation | 0.62 | 1.67 | 10.73 | 0.64 | 1.66 | 11.18 |
| CV (%) | 6.2% | 4.4% | 7.4% | 7.2% | 4.5% | 8.6% |
Kit components
Description|Quantity Pre-coated 96-well strip microplate|1 Standard|2 vials Biotinylated antibody (100x)|100ul Avidin-Biotin-Peroxidase Complex (100x)|100ul Sample Diluent|30ml Antibody Diluent|12ml Avidin-Biotin-Peroxidase Diluent|12ml Color Developing Reagent (TMB)|10ml Stop Solution|10ml Wash Buffer (25x)|20ml Adhesive plate sealers|4Materials required but not provided
- Microplate Reader capable of reading absorbance at 450nm.
- Incubator.
- Automated plate washer (optional).
- Pipettes and pipette tips capable of precisely dispensing 0.5 µl through 1 ml volumes of aqueous solutions.
- Multichannel pipettes are recommended for large amount of samples.
- Deionized or distilled water.
- 500ml graduated cylinders.
- Test tubes for dilution.
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