Used in biomedical research to quantify L-phenylalanine levels in biological samples, this ELISA kit is particularly valuable in studies related to phenylketonuria (PKU) and metabolic disorders. It enables researchers to measure enzyme activity related to phenylalanine metabolism, supporting diagnosis development and therapeutic monitoring in experimental models. The kit is also applied in drug development and toxicology studies where amino acid metabolism is assessed. Its high sensitivity and specificity make it suitable for detecting small changes in phenylalanine concentrations in serum, cell cultures, or tissue extracts.