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. Author manuscript; available in PMC: 2013 Jul 21.
Published in final edited form as: Clin Chem. 2011 Aug 11;57(10):1406–1414. doi: 10.1373/clinchem.2011.171777

Fig. 3. Cannabinoid detection rates following a single smoked 6.8% THC cannabis cigarette in whole blood (A) and plasma (B). n = 9, 6, and 10 at 0.25 h, 22 h, and all other times, respectively.

Fig. 3

All samples contained THCCOOH and THCCOOH-glucuronide. Limits of quantification: 1 μg/L for THC, 11-OH-THC, CBD, CBN, and THCCOOH; 0.5 μg/L for THC-glucuronide; 5.0 μg/L for THCCOOH-glucuronide.