6-Monoacetylmorphine/Creatinine:MRto:Pt:Urine:Qn
6-monoacetylmorphine/creatinine:mrto:pt:urine:qn
6-Monoacetylmorphine (6-MAM)/Creatinine [Mass Ratio] in Urine
6-monoacetylmorphine (6-mam)/creatinine [mass ratio] in urine