Used in biomedical research to measure histamine levels in biological samples such as serum, plasma, or cell culture supernatants. Enables researchers to study allergic reactions, immune responses, and mast cell activation. Commonly applied in clinical labs and pharmaceutical studies to evaluate the effectiveness of antihistamines or anti-inflammatory drugs. Provides a reliable, sensitive, and quantitative method for monitoring histamine concentration in experimental models related to asthma, anaphylaxis, and other allergic conditions.