4F-MDMB-BINACA/Creatinine:MRto:Pt:Urine:Qn:Confirm
4f-mdmb-binaca/creatinine:mrto:pt:urine:qn:confirm
4F-MDMB-BINACA/Creatinine [Mass Ratio] in Urine by Confirmatory method
4f-mdmb-binaca/creatinine [mass ratio] in urine by confirmatory method