Table 3.

CBD (μg/l) concentrations in expectorated oral fluid from 10 participants before and after smoking a single 6.8% THC cigarette.

Time (h)	−0.5	0.25	0.5	1	2	3	4	6	22
A	<LOQ	28.5	NC	6.6	1.2	<LOQ	0.3	<LOQ	<LOQ
B	<LOQ	NC	NC	NC	23.1	6.4	5.6	2.4	0.3
C	<LOQ	213	42.5	<LOQ*	15.0	1.5	1.6	1.6	<LOQ
D	<LOQ	152	10.6	17.6	<LOQ	0.3	0.8	<LOQ	<LOQ
E	<LOQ	271	22.0	10.8	<LOQ	<LOQ	<LOQ	<LOQ	DC
F	<LOQ	90.0	49.0	14.5	3.9	3.2	0.5	0.6	DC
G	<LOQ	89.5	NC	25.0	1.8	<LOQ	<LOQ	<LOQ	<LOQ
H	<LOQ	1000	NC	38.0	10.7	10.6	1.1	0.5	<LOQ
I	<LOQ	8.8	3.6	1.5	0.4	<LOQ	<LOQ	<LOQ	DC
J	<LOQ	113	52.5	12.8	42.2	12.9	2.2	2.2	DC
Mediana	-	121	22.0	14.5	3.9	3.2	0.9	1.1	0.3

NC- not collected due to dry mouth; DC -discharged at 6 h from the unit;

<LOQ – below limit of quantification: CBD – 0.25 μg/l;

<LOQ* – below limit of quantification in low volume specimens for CBD (12.5 μg/l), due to a required 50-fold dilution.

^aMedian – participant J excluded due to blood in oral fluid