Chemicals - - - - - - - - - - - - - - - Alcohol Amphetamines AMT Barbiturates Caffeine Cocaine DMT DOI DXM GHB Heroin Ibogaine Inhalants Ketamine LSA LSD MDMA MDPV Mescaline Methadone Methamphetamine Methaqualone Nicotine Opiates PCP 2C-B 2C-I 2C-T-2 2C-T-7 2C-T-21 5-MeO-DIPT 5-MeO-DMT Plants - - - - - - - - - - - - - - Cannabis Coca T. Iboga Mushrooms Salvia Pharmaceuticals - - - - - - - - - - - - - - Diazepam (Valium) Dihydrocodeine Flunitrazepam (Rohypnol) Hydrocodone Hydromorphone Methadone Methylphenidate (Ritalin) Oxycodone Venlafaxine

Drug screening tests are notoriously unreliable with false positives being common. They must always be backed up by a more sophisticated GC/MS confirmation before being considered conclusive. Drug testing laboratories generally do perform this extra confirmation step.