Intact FGF-21 ELISA Kit
Intact FGF-21 ELISA Kit Developed and Manufactured in the USA
Size: 1×96 wells
Sensitivity: 1.7 pg/mL
Dynamic Range: 32.5 – 2000 pg/ml
Incubation Time: 2.5 hours
Sample Type: Serum, Plasma
Sample Size: 50 µL
Alternative Names: Human Intact FGF-21 ELISA Kit,
For Research Use Only
The Intact Fibroblast Growth Factor 21 (FGF-21) ELISA Assay Kit is designed, developed and produced for the quantitative measurement of human intact FGF-21 in serum and EDTA-plasma sample. The assay utilizes the two-site “sandwich” technique with two selected antibodies that bind to different epitopes of human intact FGF-21. One of the antibodies is specifically binds to the N-terminal human FGF-21 (1-7) and the other is specifically to the C-terminal human FGF-21 (175-181).
Assay standards, controls and patient samples are added directly to wells of microplate that is coated with an anti-human FGF-21 (1-7) specific antibody. Simultaneously, a horseradish peroxidase conjugated anti-human FGF-21 (175-181) specific antibody is added to each well. After the first incubation period, the antibody on the wall of microtiter well captures human FGF-21 in the sample and an unbound protein in each microtiter well is washed away. A “sandwich” of “anti-FGF-21 antibody — human intact FGF-21 — HRP conjugated tracer antibody” is formed. The unbound tracer antibody is removed in the subsequent washing step. For the detection of this immunocomplex, the well is then incubated with a substrate solution in a timed reaction and then measured in a spectrophotometric microplate reader. The enzymatic activity of the immunocomplex bound to human intact FGF-21 on the wall of the microtiter well is directly proportional to the amount of intact FGF-21 in the sample. A standard curve is generated by plotting the absorbance versus the respective human intact FGF-21 concentration for each standard on point-to-point or 4 parameter curve fit. The concentration of human intact FGF-21 in test samples is determined directly from this standard curve.