Carboxy-THC in Washed Hair: Still the Reliable Indicator of Marijuana Ingestion

The presence of the metabolite 11-nor-9-carboxy-delta-9-tetrahydrocannabinol (C-THC) in hair is generally accepted as the definitive proof of delta-9-tetrahydrocannabinol (THC) ingestion. During hair analysis, the removal of any potential C-THC external contamination that could result from marijuana...

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Bibliographic Details
Published inJournal of analytical toxicology Vol. 40; no. 5; pp. 345 - 349
Main Authors Hill, Virginia A., Schaffer, Michael I., Stowe, G. Neil
Format Journal Article
LanguageEnglish
Published England Oxford University Press 01.06.2016
Subjects
Cannabis
Dronabinol - analysis
Hair - chemistry
Humans
Substance Abuse Detection - methods
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Summary:The presence of the metabolite 11-nor-9-carboxy-delta-9-tetrahydrocannabinol (C-THC) in hair is generally accepted as the definitive proof of delta-9-tetrahydrocannabinol (THC) ingestion. During hair analysis, the removal of any potential C-THC external contamination that could result from marijuana smoke or close personal contact via a wash procedure is critical. Here, we performed a series of experiments to demonstrate that C-THC is the reliable indicator of marijuana ingestion when paired with the correct washing procedure to remove potential external contamination.
ISSN:0146-4760
1945-2403
DOI:10.1093/jat/bkw031