This Human Protein disulfide isomerase (PDI) ELISA Kit employs a two-site sandwich ELISA to quantitate P4HB in samples. An antibody specific for P4HB has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyP4HB present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for P4HB is added to the wells. After washing, Streptavidin 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 P4HB bound in the initial step. The color development is stopped and the intensity of the color is measured.
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