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[PDF File]False Positive and False Negative Results in Urine Drug ...
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diagnostic test. Testing of known cotinine-positive and known c otinine-negative saliva samples with the saliva cotinine test showed 97.6% sensitivity (ability for the test to correctly identify positive specimens) and >99% specificity (ability for the test to correctly identify negative specimens). By comparison, the lab -
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[PDF File]False-Positive Interferences of Common Urine Drug Screen ...
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duration 2-4 hrs only is positive as morphine in 2-3 days . Enzyme linked immunoassay – EIA. • Screening test for illicit substances amphetamine/ methamphetamine, marijuana, PCP, cocaine, “opiates” (e.g., morphine/codeine) • Inexpensive, fast, point of care or lab • Detects class of substance, not specific medication
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[PDF File]Critical Evaluation of the Cocaine Test in the Diagnosis ...
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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, and the preferred primarily test for urine drug screening. This method reliably detects commonly drugs of abuse such as
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[PDF File]Nicotine Testing – Common Questions
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‘False-positive’ and ‘false-negative’ test results in clinical urine drug testing 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 physicians and laboratory professionals and they
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How Long Does Cocaine Stay in Your System? Urine, Blood ...
cocaine test for diagnosing Horner's syn-drome. The test was administered to 119 patients with a diagnosis of Horner's syn-drome and to 50 normal subjects. We compared the cocaine-induced anisocoria in the two groups by measuring photo-graphs of the pupils. We found the cocaine test to be highly effective in separating normal subjects from ...
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[PDF File]False-positive and false-negative test results in clinical ...
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strings ‘false positive [drug] urine’ yielding 173 articles. These arti-cles were then carefully analyzed and condensed to 62 that included data on causes of false-positive results. The discussion is separated into six sections by drug class with a corresponding table of cross-reacting compounds for quick reference. False-positive results were
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What causes positive cocaine test