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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. 4.

Fig. 4

Predictive mathematical models for estimating the elapsed time of last cannabis use based on plasma THC and THC-COOH concentrations. Reprinted and adapted with permission by Journal of Analytical Toxicology, p. 285 in [140], Fig. 1.