11-Hydroxy delta-9 tetrahydrocannabinol:PrThr:Pt:Urine:Ord:Screen
11-hydroxy delta-9 tetrahydrocannabinol:prthr:pt:urine:ord:screen
11-Hydroxy delta-9 tetrahydrocannabinol:Presence or Threshold:To identify measures at a point in time:Urine:Ordinal:Screen
11-hydroxy delta-9 tetrahydrocannabinol:presence or threshold:to identify measures at a point in time:urine:ordinal:screen