Description
Principle of the Assay: This assay employs the quantitative sandwich enzyme immunoassay technique. Antibody specific for CSTA/STF1/STFA has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any CSTA/STF1/STFA present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for CSTA/STF1/STFA is added to the wells. After washing, avidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of CSTA/STF1/STFA bound in the initial step. The color development is stopped and the intensity of the color is measured