Used in biomedical research to measure cholecystokinin (CCK) levels in pig samples, particularly for studying digestive physiology and gallbladder function. Enables researchers to quantify CCK concentration in serum, plasma, or tissue extracts to investigate hormonal regulation of digestion, satiety, and pancreatic secretion in swine models. Commonly applied in veterinary research, animal nutrition studies, and endocrine function assessments. Provides a reliable, sensitive method for monitoring CCK response to dietary components or disease states in pigs.