Used in biomedical research to measure levels of oxyntomodulin (OXM), a gut hormone involved in regulating gastric acid secretion and appetite. Helps investigate gastrointestinal disorders, metabolic diseases like diabetes and obesity, and hormonal responses to food intake. Commonly applied in preclinical studies, clinical diagnostics research, and drug development to assess endocrine function and evaluate therapeutic interventions targeting gut-brain signaling pathways.