Benzoylecgonine cutoff:MCnc:Pt:Urine:Qn:Confirm
benzoylecgonine cutoff:mcnc:pt:urine:qn:confirm
Benzoylecgonine cutoff [Mass/volume] in Urine for Confirmatory method
benzoylecgonine cutoff [mass/volume] in urine for confirmatory method