Table 4.
Usual Tetrahydrocannabinol Levels (mg or %) Reported by Past 12-Month Users of Each Product Type, by Jurisdiction
| Product and unit (% or mg) | Canada |
US illegal states |
US legal states |
|||
|---|---|---|---|---|---|---|
| Mean (SD) | Median, mode, and range | Mean (SD) | Median, mode, and range | Mean (SD) | Median, mode, and range | |
| Dried herb | ||||||
| % (n=477) | 32.9 (22.4) | 24.0, 20.0, 1–100 | 42.0 (28.2) | 29.4, 80.0, 0–100 | 30.7 (19.5) | 24.0, 20.0, 0–96 |
| mg (n=142) | 46.0 (209.1) | 10.0, 2.0, 2–1500 | 20.3 (23.7) | 10.0, 10.0, 1–100 | 41.2 (52.1) | 22.9, 20.0, 1–300 |
| Oil - oral* | ||||||
| % (n=196) | 24.5 (23.7) | 22.8, 25.0, 0–90 | 27.2 (31.6) | 19.0, 0.0, 0–100 | 18.6 (22.4) | 10.0, 0.0, 0–95 |
| mg (n=143) | 76.0 (256.7) | 3.0, 1.0, 0–1500 | 6.2 (8.0) | 3.0, 1.0, 0–25 | 20.9 (29.3) | 10.0, 0.0, 0–162 |
| Oil - vaped | ||||||
| % (n=230) | 49.6 (34.3) | 47.7, 25.0, 0–100 | 41.1 (34.5) | 25.0, 0.0, 0–100 | 49.9 (31.8) | 50.0, 22.0, 0–95 |
| mg (n=93) | 58.2 (122.6) | 12.0, 12.0, 0–750 | 11.5 (18.8) | 4.0, 1.0, 0–92 | 127.9 (272.9) | 10.0, 1.0, 0–1000 |
| Edibles/foods | ||||||
| % (n=161) | 40.4 (29.2) | 34.1, 60.0, 0–100 | 35.2 (27.2) | 27.7, 80.0, 0–90 | 38.6 (25.9) | 35.0, 50.0, 0–100 |
| mg (n=312) | 71.7 (122.3) | 25.0, 100.0, 0–800 | 50.1 (156.0) | 10.0, 1.0, 0–1000 | 60.8 (95.7) | 10.0, 10.0, 0–500 |
| Concentrates | ||||||
| % (n=134) | 57.0 (27.6) | 54.2, 90.0, 5–100 | 46.1 (31.2) | 36.0, 50.0, 1–100 | 64.8 (28.7) | 72.7, 95.0, 5–100 |
| mg (74) | 10.0 (20.2) | 3.0, 3.0, 2–150 | 17.8 (24.2) | 10.0, 10.0, 1–100 | 38.9 (49.0) | 15.4, 10.0, 1–144 |
| Hash/kief | ||||||
| % (n=90) | 32.7 (24.6) | 25.0, 25.0, 1–100 | 54.6 (28.3) | 61.4, 80.0, 10–90 | 54.9 (29.3) | 50.0, 50.0, 2–100 |
| mg (n=72) | 70.8 (184.3) | 6.0, 2.0, 2–750 | 15.1 (24.5) | 6.1, 5.0, 1–100 | 24.8 (34.3) | 10.0, 10.0, 0–200 |
| Drinks | ||||||
| % (56) | 38.7 (33.7) | 37.2, 56.0, 1–100 | 36.7 (30.2) | 30.9, 50.0, 0–90 | 38.8 (30.0) | 30.0, 10.0, 1–100 |
| mg (n=89) | 28.2 (43.5) | 10.0, 10.0, 2–220 | 20.2 (28.0) | 10.0, 20.0, 1–100 | 43.5 (52.9) | 15.0, 10.0, 0–180 |
| Tinctures | ||||||
| % (n=68) | 28.0 (34.2) | 10.0. 75.0, 0–100 | 26.2 (21.0) | 34.0, 50.0, 0–56 | 18.1 (21.4) | 10.4, 0.0, 0–70 |
| mg (n=71) | 297.9 (383.4) | 100.2, 900, 0–900 | 81.0 (256.6) | 5.2, 4.0, 0–1000 | 32.2 (44.3) | 10.0, 0.0, 0–175 |
| Topicals | ||||||
| % (n=93) | 13.0 (26.7) | 5.0, 0.0, 0–100 | 19.5 (19.6) | 10.0, 50.0, 0–50 | 22.7 (27.6) | 10.0, 0.0, 0–90 |
| mg (n=77) | 79.3 (120.5) | 10.0, 10.0, 0–400 | 16.1 (18.2) | 10.0, 10.0, 0–74 | 24.1 (57.5) | 5.0, 10.0, 0–530 |
*
THC and CBD levels of orally administered cannabis oil are typically labelled in mg/mL; however, the survey permitted respondents to report in % or mg.