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. Author manuscript; available in PMC: 2014 Jul 1.
Published in final edited form as: Clin Chem. 2013 Mar 21;59(7):10.1373/clinchem.2012.201467. doi: 10.1373/clinchem.2012.201467

Fig. 4. Median (interquartile range) (n = 10) cannabinoid stability after 1 week at room temperature and up to 26 and 52 weeks at 4 °C and −20 °C, respectively, in low and high THC plasma pools.

Fig. 4

No THC-glucuronide, CBN, or CBD low pools exceeded the LOQ; 6, 7, and 6 high pools exceeded the LOQ for THC-glucuronide, CBN, and CBD, respectively. Significant differences from baseline for *low pool; #high pool; 1low pool moles of THCCOOH + THCCOOH-glucuronide; or 2high pool moles of THCCOOH + THCCOOH-glucuronide.