2-Methyl AP-237/Creatinine:MRto:Pt:Urine:Qn:Confirm
2-methyl ap-237/creatinine:mrto:pt:urine:qn:confirm
2-methyl AP-237/Creatinine [Mass Ratio] in Urine by Confirmatory method
2-methyl ap-237/creatinine [mass ratio] in urine by confirmatory method