Confirmation of Emit Cannabinoid Assay Results by Bonded Phase Adsorption with Thin Layer Chromatography
- 1 January 1983
- journal article
- research article
- Published by Taylor & Francis in Journal of Toxicology: Clinical Toxicology
- Vol. 20 (5) , 465-473
- https://doi.org/10.3109/15563658308990612
Abstract
Clinical urine specimens were screened for the presence of cannabinoids [constituents of marijuana, a drug of abuse] using the EMIT Cannabinoid Assay. Aliquots of these samples were also analyzed for 11-nor-.DELTA.9-tetrahydrocannabinol-9-carboxylic acid (THCA), the major cannabis metabolite in urine, by a technique which combines bonded phase adsorption (BPA) and TLC. A 100% agreement between EMIT and BPA-TLC results was observed when at least 20 ml of urine was assayed by BPA-TLC. Bonded phase adsorption coupled with TLC appears to be a suitable technique for the confirmation of positive EMIT Cannabinoid Assay results.This publication has 7 references indexed in Scilit:
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- Semi-quantitative thin-layer mass-screening detection of 11-nor-Δ9-tetrahydrocannabinol-9-carboxylic acid in human urineJournal of Chromatography A, 1982
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