The glucose oxidase enzyme (GOx) (EC 1.1.3.4) is an oxido-reductase that catalyzes the oxidation of glucose to hydrogen peroxide and D-glucono-δ-lactone. In cells, it aids in breaking the sugar down into its metabolites. BioVision’s Glucose Oxidase Assay Kit provides a convenient tool for sensitive detection of the Glucose Oxidase in a variety of samples. The Glucose Oxidase in sample will recognize d-glucose as a specific substrate leading to proportional color development. The activity of GOx can be easily quantified colorimetrically (λ = 570 nm) or fluorometrically (Ex/Em = 535/585 nm). This assay detects GOx activity as low as 0.01mU with our unit definition.