Cayman's COX Fluorescent Inhibitor Screening Assay provides a convenient fluorescence-based method for screening ovine COX-1 and human recombinant COX-2 for isozyme-specific inhibitors. The assay utilizes the peroxidase component of COXs. In this assay, the reaction between PGG2 and ADHP produces the highly fluorescent compound resorufin. Resorufin fluorescence can be analyzed with an excitation wavelength between 530-540 nm and an emission wavelength between 585-595 nm.