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