In a survey of suicides in the US in 2015, 13,317 people underwent any toxicology testing. Of that group, 74.4 percent tested positive for one or more substances.
Substance | Percent tested | Percent positive |
|---|---|---|
| Antidepressants | 27%26.5 | 40.8%40.8 |
| Alcohol | 54%53.6 | 40.6%40.6 |
| Benzodiazepines | 40%39.7 | 30.3%30.3 |
| Opioids | 42%41.8 | 26.6%26.6 |
| Marijuana | 32%32.1 | 22.4%22.4 |
| Amphetamines | 37%37.2 | 9.7%9.7 |
| Cocaine | 39%39 | 6.3%6.3 |
