Introduction Gases Carbon Monoxide (CO) Metals Arsenic (As) Lead (Plumbum, Pb) Mercury (Hydrargyrum, Hg) Organophosphates Recreational drugs, drugs of abuse, illicit drugs Alcohol, EtOH Amphetamines Cocaine Intravenous Drugs Opiates Heroin Marijuana Tox Therapeutic Drugs Carbamazepine Digoxin Gentamycin Phenytoin Vancomycin