The transaminated product of the action of phenylalanine aminotransferase; elevated in the urine in individuals with phenylketonuria.
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phe·nyl·py·ru·vic acid -pī-.rü-vik- n a crystalline keto acid C9H8O3 found in the urine as a metabolic product of phenylalanine esp. in phenylketonuria
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phen·yl·py·ru·vic ac·id (fen″əl-pi-rooґvik) a metabolite of phenylalanine, excessively formed and excreted in phenylketonuria because the major pathway of phenylalanine catabolism, via hydroxylation, is blocked.Medical dictionary. 2011.