Used in research settings to quantify levels of diamine oxidase (DAO) in human biological samples, this ELISA kit enables accurate measurement of DAO enzyme concentration, which plays a key role in histamine metabolism. It is commonly applied in studies related to histamine intolerance, gastrointestinal disorders, and pregnancy, where DAO levels are clinically relevant. The kit supports investigation into DAO deficiency and its association with allergic responses, digestive issues, and adverse food reactions. Its high sensitivity and specificity make it suitable for both clinical research and pharmaceutical development involving histaminergic pathways.