Table 5.
Breath THC concentrations (pg/pad) from chronic and occasional cannabis smokers after smoking a single 6.8% THC cigarette within 10 min.
| Time after smokinga,b | Chronic cannabinoid smokers | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | D | E | F | G | H | I | J | K | L | M | N | |
| Admission | —c | — | — | — | — | — | — | 90.1 | — | 102.0 | — | — | — |
| −1.00 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 0.50 | 50.7 | 292.0 | 409.0 | 147.0 | 177.0 | 84.5 | 161.0 | 182.0 | 65.8 | 171.0 | 117.0 | 51.4 | 55.5 |
| 1.00 | 109.0 | 209.0 | 159.0 | 71.4 | 89.6 | 51.4 | 159.0 | 159.0 | — | 90.9 | 85.3 | — | — |
| 2.00 | — | 67.6 | 86.3 | 50.5 | — | — | 97.6 | 74.3 | — | 94.8 | 54.0 | — | — |
| 3.00 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 4.00 | — | — | — | — | — | — | — | — | — | 98.0 | — | — | — |
| Time after smokingb,d | Occasional cannabinoid smokers | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| O | P | Q | R | S | T | U | V | W | X | Y | |
| 0.50 | 118.0 | 1170.0e | 60.4 | 56.4 | 87.4 | 50.2 | 101.0 | 54.9 | — | 106 | 61.5 |
| 1.00 | 53.0 | 74.3 | 50.8 | 83.7 | 53.0 | — | 92.3 | — | — | — | 50.4 |
a
Actual mean (range) collection times. Admission: −18.35 h (−19.37 to −17.33 h); −1 h: −0.82 h (−0.97 to −0.59 h); 0.5 h: 0.89 h (0.78–1.01 h); 1 h: 1.38 h (1.29–1.54 h); 2 h: 2.38 h (2.25–2.53 h), 3 h: 3.23 h (3.11–3.42 h), 4 h: 4.27 h (4.11–4.45 h).
b
All samples collected from chronic cannabis smokers 5–21 h postsmoking were <LOQ. All occasional smoker breath samples were <LOQ at admission and at −1 and 2–21 h postsmoking.
c
—, <LOQ.
d
Actual mean (range) collection times, 0.5 h: 0.95 h (0.74–1.10 h); 1 h: 1.49 h (1.21–2.07 h).
e
CBN 150 pg/pad.