Cocaine+Benzoylecgonine:PrThr:Pt:Ser/Plas/Bld:Ord:Screen
cocaine+benzoylecgonine:prthr:pt:ser/plas/bld:ord:screen
Cocaine+Benzoylecgonine:Presence or Threshold:To identify measures at a point in time:Serum/Plasma/Whole blood:Ordinal:Screen
cocaine+benzoylecgonine:presence or threshold:to identify measures at a point in time:serum/plasma/whole blood:ordinal:screen