4-Hydroxyphenylpyruvate/Creatinine:MRto:Pt:Urine:Qn
4-hydroxyphenylpyruvate/creatinine:mrto:pt:urine:qn
4-Hydroxyphenylpyruvate/Creatinine (U) [Mass ratio]
4-hydroxyphenylpyruvate/creatinine (u) [mass ratio]