Number of participating laboratories with the percentage of results that were acceptable results in the proficiency test for drugs of abuse during 2019
| Test substances | % Range (2015–2018) | During 2019 | |||
|---|---|---|---|---|---|
| 19-01 | 19-02 | 19-03 | 19-04 | ||
| Methamphetamine | 94.6–100 | 121 (99.2) | 121 (99.2) | 120 (98.3) | 120 (98.3) |
| 9-COOH-11-nor-△9-THC | 94.6–100 | 110 (100) | 110 (99.1) | 110 (97.3) | 110 (98.2) |
| Morphine, Free | 96.6–100 | 111 (99.1) | 111 (99.1) | 110 (98.2) | 110 (98.2) |
| Benzoylecgonine | 95.9–100 | 102 (100) | 102 (100) | 103 (98.1) | 103 (98.1) |
| d-Amphetamine | 87.5–100 | 79 (100) | 79 (97.5) | 78 (97.4) | 78 (98.7) |
| Methylenedioxymethamphetamine | 84.0–100 | 60 (100) | 60 (91.7) | 62 (96.8) | 62 (98.4) |
| Phencyclidine | 100–100 | 22 (100) | 22 (100) | 22 (100) | 22 (100) |
| Methadone | 100–100 | 17 (100) | 17 (100) | 17 (100) | 17 (100) |
| Nordiazepam | 100–100 | 13 (100) | 13 (100) | 15 (100) | 15 (100) |
| Oxazepam | 100–100 | 15 (100) | 15 (100) | 15 (100) | 15 (100) |
| 3,4-Secobarbital | 100–100 | 8 (100) | 8 (100) | 12 (100) | 12 (100) |
| Nortriptyline | 100–100 | 11 (100) | 11 (100) | 12 (100) | 12 (100) |
| Ethanol | 100–100 | 4 (100) | 4 (100) | 4 (100) | 4 (100) |
| Propoxyphene | 100–100 | 3 (100) | 3 (100) | 3 (100) | 3 (100) |
| Lysergic acid diethylamide (LSD) | 100–100 | 2 (100) | 2 (100) | 2 (100) | 2 (100) |
Values are presented as number (%).