Table 1.
Substances included, cut-off limits and concentration groups used to estimate degree of substance influence
| Drugs | Cut off | 1 point | 2 points | 4 points | 6 points |
|---|---|---|---|---|---|
| Alcohol (ethanol) a | 0.01 | 0.05–0.10 | 0.11–0.15 | 0.16–0.25 | ≥0.26 |
| Illicit drugs | |||||
| Amphetaminesb | 4/4.5 | 70–270 | 271–554 | 555–1052 | ≥1053 |
| Cannabis (tetrahydrocannabinol) | 0.15 | 0.6–2.8 | 2.9–4.7 | 4.8–9.7 | ≥ 9.8 |
| Cocaine | 6 | 60–243 | 244–515 | 516–789 | ≥ 790 |
| Medicinal drugs | |||||
| Alprazolam | 5 | 15–46 | 47–97 | 98–147 | ≥ 148 |
| Clonazepam | 5 | 9–47 | 48–98 | 99–148 | ≥ 149 |
| Codeine | 3 | 90–286 | 287–603 | 604–920 | ≥ 921 |
| Diazepam | 29 | 85–313 | 314–654 | 655–996 | ≥ 997 |
| Flunitrazepam | 0.8 | 1.6–6 | 7–12 | 13–18 | ≥ 19 |
| Methadone | 30 | 123–433 | 434–896 | 897–1360 | ≥ 1361 |
| Morphine | 3 | 15–54 | 55–140 | 141–284 | ≥ 285 |
| Nitrazepam | 7 | 14–53 | 54–110 | 111–166 | ≥ 167 |
| Oxazepam | 143 | 583–1118 | 1119–2265 | 2266–3411 | ≥ 3412 |
| Zolpidem | 8 | 46–104 | 105–212 | 213–430 | ≥ 431 |
| Zopiclone | 10 | 35–66 | 67–136 | 137–206 | ≥ 207 |
a Values given in %. All other values are calculated and rounded off from original micromolar values, and given in ng/ml
b Sum of amphetamine and/or methamphetamine