Drug tests commonly screen for a range of substances, including but not limited to:
Alcohol: Often tested in blood, breath, and urine samples. Cannabinoids: Such as THC, the active component in marijuana. Opiates: Including morphine, heroin, and codeine. Amphetamines: Such as methamphetamine and ecstasy. Benzodiazepines: Like diazepam and alprazolam. Cocaine: A common illicit drug tested for in various settings.