Today on-site drug testing is used widely in the workplace, the justice system (probation and parole), hospital emergency rooms, physician offices, and rehabilitation programs. In On-Site Drug Testing, scientists and forensic toxicologists critically evaluate the on-site devices currently available, their validation studies, and their use in a variety of settings. For each device, the expert contributors discuss its principles, materials and reagents, procedures and interpretation, and performance. The tests applied include both therapeutic drugs (lipid-lowering medications, antithrombotic medications, and anticoagulant drugs) at the point of clinical care and drugs of abuse (alcohol, amphetamines, benzodiazepines, cannabinoids, cocaine, and opiates) in the workplace and the criminal justice system. The well-versed contributors also address critical issues in sample collection and adulteration, and in program standards and legal requirements in workplace testing. Comprehensive and authoritative, On-Site Drug Testing illuminates the state of on-site drug testing today, and provides all those responsible a firm basis for choosing the best test devices and techniques most suited to their purposes.