Drugs of Abuse:
Amphetamines
Barbiturates
Benzodiazepines
Cannabinoid metabolites
Cocaine metabolites
Ecstasy (MDMA/MDA)
Methadone
Methadone metabolites (EDDP)
Methamphetamine
Opiates
Oxycodone
Phencyclidine
Tricyclic antidepressants

Therapeutic Drugs:
Acetaminophen
Carbamazepine
Digoxin
Ethanol
Gentamicin
Lithium
Phenobarbital
Phenytoin
Salicylate
Theophylline
Tobramycin
Valproic acid
Vancomycin