Injected Tracer Doses
| Parameter | Actual ecstasy users (group A) | Former ecstasy users (group F) | Drug-naive controls (group N) | Polydrug users (group P) |
|---|---|---|---|---|
| Radioactivity dose (MBq) | 465 ± 87 (324–700) | 451 ± 71 (251–549) | 467 ± 84 (134–582) | 480 ± 59 (360–555) |
| Specific activity at injection (MBq/nmol) | 56.4 ± 50.0 (14.0–203) | 66.5 ± 47.5 (14.6–204) | 87.7 ± 44.0 (14.7–175) | 120 ± 56.7 (47.4–302) |
| Mass dose (nmol) | 14.9 ± 9.8 (1.6–35.3) | 11.2 ± 8.6 (2.3–35.2) | 8.0 ± 7.7 (2.2–36.7) | 4.7 ± 1.7 (1.3–8.6) |
Data are given as mean ± 1 SD (range).