Tribioscience’s ADHP-red Hydrogen Peroxide Assay Kit is a sensitive, simple, direct, and HTS-ready colorimetric/fluorometric assay designed to measure H2O2 levels in biological samples. In the presence of Horse Radish Peroxidase (HRP), the ADHP-red probe reacts with H2O2 to produce a resorufin that appears red in color. The resorufin can be measured with the absorption of 570nm (λmax = 570nm) for colorimetric or a highly stable fluorometric assay at maximum emission of 585nm (Ex/Em = 535/587 nm).