Phenylpropionylglycine

Phenylpropionylglycine is an unusual organic acid in urine that indicates disrupted phenylalanine or aromatic amino acid metabolism. Its presence suggests disorders of amino acid processing or potentially abnormal gut bacterial metabolism. This compound may be detected in phenylketonuria variants, other amino acid metabolism disorders, or in response to certain medications or dietary supplements. Finding this metabolite warrants investigation to identify the underlying cause and prevent long-term metabolic complications.