11-Hydroxy delta-9 tetrahydrocannabinol:PrThr:Pt:Bld:Ord
11-hydroxy delta-9 tetrahydrocannabinol:prthr:pt:bld:ord
11-Hydroxy delta-9 tetrahydrocannabinol:Presence or Threshold:To identify measures at a point in time:Whole blood:Ordinal
11-hydroxy delta-9 tetrahydrocannabinol:presence or threshold:to identify measures at a point in time:whole blood:ordinal