Ustekinumab ELISA Kit

PRINCIPLE OF THE ASSAY This assay employs the quantitative competitive enzyme immunoassay technique. Recombinant Human IL12B has been pre-coated onto a microplate. Standards or samples are premixed with biotin-labeled antibody and then pipetted into the wells. Ustekinumab in the sample competitively binds to the pre-coated protein with biotin-labeled Ustekinumab. After washing away any unbound substances, Streptavidin-HRP is added to the wells. Following a wash to remove any unbound enzyme reagent, a substrate solution is added to the wells and color develops in inversely proportion to the amount of Ustekinumab bound in the initial step. The color development is stopped and the intensity of the color is measured.