Used in biomedical research to measure levels of cholecystokinin (CCK) in biological samples such as plasma, serum, or tissue extracts. This ELISA kit enables scientists to study CCK's role in digestion, appetite regulation, and satiety signaling. It is widely applied in neuroscience and endocrinology studies to investigate gut-brain communication, pancreatic function, and gallbladder contraction mechanisms. The kit supports quantitative analysis, making it valuable in preclinical studies of metabolic disorders, eating behavior, and gastrointestinal diseases.