Testing for Drugs of Abuse: Controversies and Techniques.
Testing for drugs of abuse involves screening tests, designed for maximal sensitivity, and confirming tests, designed for maximal specificity. The author offers practical suggestions for testing, examines various procedures, reviews legal and ethical issues, and warns against common pitfalls.
Schwartz
RH
Clinical Professor of Pediatrics, George Washington University School of Medicine, Washington, D.C., Director of Research, Department of Pediatrics, Fairfax Hospital, Falls Church, Virginia, USA.