Carboxy tetrahydrocannabinol:PrThr:Pt:Urine:Ord:Confirm
carboxy tetrahydrocannabinol:prthr:pt:urine:ord:confirm
Carboxy tetrahydrocannabinol [Presence] in Urine by Confirmatory method
carboxy tetrahydrocannabinol [presence] in urine by confirmatory method