Phenylalanine/Creatinine:MRto:24H:Urine:Qn
phenylalanine/creatinine:mrto:24h:urine:qn
Phenylalanine/Creatinine:Mass Ratio:24 hours:Urine:Quantitative
phenylalanine/creatinine:mass ratio:24 hours:urine:quantitative