Drugs for which subjects were tested included cocaine, opiates, marijuana, phencyclidine, benzodiazepines, methaqualone, methadone, propoxyphene, barbiturates , and amphetamines.
Drugs for which subjects were tested included cocaine, opiates, marijuana, phencyclidine, benzodiazepines, methaqualone, methadone, propoxyphene, barbiturates , and amphetamines.