Benzoylecgonine cutoff:MCnc:Pt:Saliva:Qn:Confirm
benzoylecgonine cutoff:mcnc:pt:saliva:qn:confirm
Benzoylecgonine cutoff [Mass/volume] in Saliva (oral fluid) for Confirmatory method
benzoylecgonine cutoff [mass/volume] in saliva (oral fluid) for confirmatory method