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| Drug metabolite | No of positive samples | % of total |
|---|---|---|
| Morphine | 14 | 93.3 |
| Codeine | 8 | 53.3 |
| Methadone | 15 | 100.0 |
| Diazepam | 11 | 73.7 |
| Temazepam | 6 | 40.0 |
| Cannabinoids* | 9 | 60.0 |
| Cocaine† | 2 | 13.3 |
| Amphetamine | 1 | 6.7 |
*Tetrahydrocannabinol and/or tetrahydrocannabinol‐9‐carboxylic acid.
†Cocaine and/or benzoylecgonine.
