Table 2. Mean (sd) concentrations of THC, cocaine and their main metabolites at baseline and after drug administration (i.e. 5 min post smoking cannabis and 65 min post oral cocaine).

	THC [ng/ml]	THC-OH [ng/ml]	THC-COOH [ng/ml]	Cocaine [mg/L]	BZE [mg/L]	EME [mg/L]
Baseline	1.57 (4.14)	0.62 (1.72)	20.91 (37.68)	0.00 (0.0)	0.00 (0.00)	0.00 (0.00)
Post drug	73.81 (63.09)	6.86 (4.32)	38.69 (33.38)	0.25 (0.19)	0.49 (0.27)	0.14 (0.11)