Used in biochemical and medical research to quantify phenylalanine hydroxylase (PAH) enzyme levels in chicken samples. This ELISA kit enables researchers to study PAH activity in poultry, which is important for understanding metabolic disorders related to phenylalanine metabolism. It is commonly applied in veterinary research, genetic studies, and in monitoring the effects of dietary or pharmaceutical interventions on amino acid metabolism in chickens. The assay provides a sensitive and specific measurement of PAH concentration in tissue homogenates or biological fluids, supporting investigations into inherited metabolic diseases and liver function in avian models.