Pentacarboxylporphyrins/Creatinine:MRto:Pt:Urine:Qn
pentacarboxylporphyrins/creatinine:mrto:pt:urine:qn
Pentacarboxylporphyrins/Creatinine (U) [Mass ratio]
pentacarboxylporphyrins/creatinine (u) [mass ratio]