Used in research settings to measure levels of polypeptide YY (PYY) in pig biological samples such as plasma or serum. This assay helps in studying gastrointestinal hormone regulation, appetite control, and energy balance in swine models. Commonly applied in metabolic and nutritional studies, particularly in evaluating the effects of diet, obesity, or gut function on gut hormone secretion. The kit enables quantitative analysis, supporting research in veterinary endocrinology, animal physiology, and agricultural science.