- Assay duration:One step
- Assay Type (ELISA with LOV):Sandwich
- Format:Pre-coated
- Primary antibody reactivity:Human
- Target protein:CD28
- Description:Human CD28 ELISA kit
- Size:96 tests
- Sample Type:Serum, plasma or other biological fluids
- Detection Method:Colorimetric
- Time to Results:1 h 30 min
- Shelf Life:Store for 6 months at 4 °C
- Detection Range:1.25 - 20 ng/ml
- Storage Temperature:4 °C
- Sample Volume:40 μl
- Sensitivity:0.024 ng/ml
- Regulatory Status:RUO
- Cat. No.:77210-378
Human CD28 ELISA kit is a 90 minute sandwich Enzyme-Linked Immunosorbent Assay (sELISA) designed for the in vitro quantitative determination of human CD28 in serum, plasma, and other biological fluids.
- Higher throughput: Get results in just 90 minutes, with a single wash step
- Assay precision: Intra-assay: CV <8%, Inter-assay: CV <10%
Human CD28 ELISA kit (A310064) employs the sandwich enzyme immunoassay technique for the quantitative measurement of human CD28 in serum, plasma or other biological fluids. An antibody specific for CD28 has been pre-coated onto a 96-well microtiter plate. The standards and test samples are added into the wells and the CD28 present in each sample is bound to the wells by the immobilized antibody. Biotinylated anti-CD28 antibody, which also binds the CD28 present in each sample, and Streptavidin-HRP, which binds the Biotinylated anti-CD28 antibody, are added and the microtiter plate is incubated. Following incubation, unbound Biotinylated anti-CD28 antibody and unbound Streptavidin-HRP are removed by washing, and two substrate solutions are added to the wells. Color develops in proportion to the amount of CD28 captured in each well. The color development is stopped by addition of stop solution which changes the color from blue to yellow and the intensity of the color is then measured. The concentration of CD28 in the samples can then be calculated by reading the O.D. absorbance at 450 nm in a microplate reader and referring to the standard curve.