Summary: it-0179 Product Overview:Catalase Assay Kit utilizes the peroxidatic function of CAT for determination of enzyme activity in plasma, serum, erythrocyte lysates, tissue homogenates, and cell lysates. The method is based on the reaction of the enzyme with methanol in the presence of an optimal concentration of H2O2. The formaldehyde produced is measured colorimetrically with Purpald, a chromogen that specifically forms a bicyclic heterocycle with aldehydes, which upon oxidation changes from colorless to a purple color