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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. 3. Baseline concentrations in low and high THC plasma pools prepared from samples collected after controlled cannabis smoking (n = 10 participant pools).

Fig. 3

Horizontal short lines are medians, and dashed lines are LOQs. a,b,cSignificant differences between low and high pools at room temperature, 4 °C, and −20 °C, respectively. 1Significant differences between room temperature (RT) and −20 °C pools.