Comparison of Δ9-tetrahydrocannabinol in venous and capillary blood following ad libitum cannabis smoking by occasional and daily users.

ABSTRACT: Δ9-Tetrahydrocannabinol (Δ9-THC) is the most prominent and main psychoactive cannabinoid found in cannabis. In forensic matters involving cannabis, such as drugged driving or workplace accident investigations, blood Δ9-THC determination is typically required. Venipuncture by a phlebotomist at a medical facility is often the standard blood collection protocol, but this procedure is time consuming and requires specialized training. Capillary blood collection at the site of a transportation or workplace mishap may provide a collection method that is logistically easier and may better reflect blood cannabinoid concentrations at the time of an incident. This study represents the first temporal comparison of the concentration of Δ9-THC and its primary metabolites in venous and capillary blood ob

SUBMITTER: Dooley G 

PROVIDER: S-EPMC12716463 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature