Propoxyphene+Norpropoxyphene cutoff:MCnc:Pt:Urine:Qn:Screen
propoxyphene+norpropoxyphene cutoff:mcnc:pt:urine:qn:screen
Propoxyphene + Norpropoxyphene cutoff [Mass/volume] in Urine for Screen method
propoxyphene + norpropoxyphene cutoff [mass/volume] in urine for screen method