Substance abuse is a significant problem in the United States. 1 Over 2.1 million emergency
department visits in 2009 were associated with drug misuse or abuse, of which 47 …

Introduction Immunoassay urine drug screen (UDS) is frequently used in clinical practice for
initial screening process, being generally available, fast, and inexpensive. Exposure to …

On-site tests based on immunoassay techniques are widely used for toxicologic screening
analysis in patients with suspected poisoning. However, such assays usually have been …

This case report describes a false-positive amphetamine/ecstasy [3, 4-
methylenedioxymethamphetamine (MDMA)] and ecstasy (MDMA) screen after therapeutic …

Urine drugs-of-abuse screening tests are routinely employed in many emergency
departments (ED) for evaluation of drug overdose. Crossreactivity can result in falsepositives …

Drug-abuse detection tests are becoming increasingly commonplace in patient care today
and provide a rapid and effective method for identifying illicit substances. Occasionally, they …

Qualitative urine drug assays are frequently used in conjunction with opioid contracts as a
means of monitoring use of prescribed controlled substances as well as concurrent use of …

Aim. The study reviews the literature on false-positive drug test results in patients taking
psychotropic medications. Method. A narrative review of available literature in English and …

An analytical method for the simultaneous determination of amphetamine (AP),
methamphetamine (MA), 3, 4‐methylenedioxyamphetamine (MDA), 3, 4‐methylenedioxy …

The interpretation of immunoassay screening and gas chromatography/mass spectrometry
confirmation testing for amphetamine, methamphetamine, and designer amphetamines is …