A study in the September 2001 Journal of Analytical Toxicology found a way of urine testing that differentiates between the use of synthetic THC and the use of marijuana. The study found that a metabolite of delta-9-tetrahydrocannabivarin (THCV) was found in the urine of cannabis users but not in that of those using the pharmaceutical drug Marinol. Thus testing positive for the metabolite, 11-COOH-THCV (11-nor-delta-9-tetrahydrocannabivarin-9-carboxylic acid), indicates the ingestion of natural cannabis products.
This finding will allow urine-test monitoring of those prescribed synthetic THC for medicinal use, but who are legally forbidden from using raw cannabis.
? September 2001 Journal of Analytical Toxicology abstract: Determination of 11-Nor-D9-Tetrahydrocannabinol-9-Carboxylic Acid in a Urine-Based Standard Reference Material by Isotope-Dilution Liquid Chromatography?Mass Spectrometry with Electrospray Ionization
? An excellent resource for med-pot research and news is the International Association for Cannabis as Medicine: email [email protected]; web www.cannabis-med.org.