Reducing False-Negative Tests in Urinary Drugs-of-Abuse Screening
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چکیده
منابع مشابه
False Positive and False Negative Results in Urine Drug Screening Tests: Tampering Methods and Specimen Integrity Tests
Urine drug screening can detect cases of drug abuse, promote workplace safety, and monitor drugtherapy compliance. Compliance testing is necessary for patients taking controlled drugs. To order and interpret these tests, it is required to know of testing modalities, kinetic of drugs, and different causes of false-positive and false-negative results. Standard immunoassay testing is fast, cheap, ...
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During routine drug analysis with the Syva d.a.u. Emit immunoassays we observed a high frequency of urines with lower rates of changes in absorbance (delta A R) than the rate for a drug-free urine calibrator. Many of these urines contained salicylates. Among 40 urines with apparent salicylate concentrations between 15 and 420 mg/dL tested for benzoylecgonine (BE), 20 had delta A R < -4 (range +...
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We investigated the effect of efavirenz treatment on the results of drug screening tests of urine samples obtained from 100 patients infected with human immunodeficiency virus. Of 50 patients who received efavirenz, 49 tested positive for benzodiazepines in > or =1 drug screening test, whereas of 50 patients who did not receive efavirenz, only 1 tested positive for benzodiazepines in > or =1 dr...
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ژورنال
عنوان ژورنال: Journal of Analytical Toxicology
سال: 1997
ISSN: 1945-2403,0146-4760
DOI: 10.1093/jat/21.3.244