Tetrahydrocannabinol:PrThr:Pt:Ser/Plas:Ord:Confirm
tetrahydrocannabinol:prthr:pt:ser/plas:ord:confirm
Tetrahydrocannabinol [Presence] in Serum or Plasma by Confirmatory method
tetrahydrocannabinol [presence] in serum or plasma by confirmatory method