Used in biomedical research to measure levels of cholecystokinin (CCK) peptide in mouse samples. Enables quantification of CCK in plasma, serum, or tissue extracts for studies related to digestion, satiety, and neuroendocrine function. Commonly applied in metabolic research, neuroscience, and drug development where monitoring gut-brain signaling is required. Provides a sensitive and specific method to assess CCK response under experimental conditions.