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. Author manuscript; available in PMC: 2009 Jun 2.
Published in final edited form as: Chem Biodivers. 2007 Aug;4(8):1770–1804. doi: 10.1002/cbdv.200790152

Fig. 6.

Fig. 6

Excretion patterns of THC in oral fluid and plasma, and urinary THC-COOH/creatinine levels in a human subject following smoking of a single cannabis cigarette containing 3.55% of THC. The THC-COOH/creatinine ratio is illustrated for all urine specimens collected through the last positive specimen. Analyses were performed by GC/MS at cutoff concentrations of 0.5 ng/ml for oral-fluid and plasma samples, and at 15 ng/ml for urine samples, resp. Reprinted and adapted with permission by Journal of Analytical Toxicology, p. 397 in [164], Fig. 2.