Human Prostate-specific antigen (PSA) ELISA Kit employs a two-site sandwich ELISA to quantitate PSA in samples. An antibody specific for PSA has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any PSA present is bound by the immobilized antibody. After removing any unbound substances, HRP-Conjugate Human PSA detection antibody is added to the wells. Following a wash to remove any unbound HRP reagent, a Chromogen solution is added to the wells and color develops in proportion to the amount of PSA bound in the initial step. The color development is stopped and the intensity of the color is measured.
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