Urine drug screen (UDS) immunoassays are a quick and inexpensive method for
determining the presence of drugs of abuse. Many cross-reactivities exist with other …

Drug testing, commonly used in health care, workplace, and criminal settings, has become
widespread during the past decade. Urine drug screens have been the most common …

Purpose The implications of potential false-positive urine drug screen (UDS) results for
patients receiving commonly prescribed medications were evaluated. Summary A …

Urine drug testing is frequently used in clinical, employment, educational, and legal settings
and misinterpretation of test results can result in significant adverse consequences for the …

The terms 'false-positive'and 'false-negative'are widely used in discussions of urine drug test
(UDT) results. These terms are inadequate because they are used in different ways by …

Urine drug testing plays an important role in monitoring licit and illicit drug use for both
medico-legal and clinical purposes. One of the major challenges of urine drug testing is …

Illicit-drug users may attempt to falsify results by in vitro adulteration of specimens. We
investigated eight additives (NaCl, Visine, handsoap, Drano, bleach, vinegar, golden-seal …

Although cocaine is typically the second-most identified drug of abuse in drug-testing
programs, there is surprisingly little quantitative information on excretion patterns following …

Urine drug testing is an essential component of monitoring patients who are receiving long-
term opioid therapy, and it has been suggested for patients receiving long-term …

I report how some adulterants affect results for drugs of abuse in urine as measured by
Roche RIA, Syva emit dau, and Abbott TDx fpia (fluorescence polarization immunoassay) for …