Tetrahydrocannabinol:PrThr:Pt:Bld:Ord:Confirm
tetrahydrocannabinol:prthr:pt:bld:ord:confirm
Tetrahydrocannabinol:Presence or Threshold:To identify measures at a point in time:Whole blood:Ordinal:Confirm
tetrahydrocannabinol:presence or threshold:to identify measures at a point in time:whole blood:ordinal:confirm