The ELISA is based on the competitive binding enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Histone acetyltransferase KAT8, During the reaction, Histone acetyltransferase KAT8 in the sample or standard competes with a fixed amount of biotin-labeled Histone acetyltransferase KAT8 for sites on a pre-coated Monoclonal antibody specific to Histone acetyltransferase KAT8. Excess conjugate and unbound sample or standard are was