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There are 2 general types of UDM: Presumptive by immunoassay (IA) and confirmatory testing by chromatography. Simply, UDM by IA commonly referred to as urine drug screening (UDS), serves as the differential assessments, whereas chromatography is the definitive assessment.
A study of clinicians who use urine toxicology testing in their practice revealed that the majority were not aware of morphine as a common metabolite of codeine, which may lead to false accusations of illicit opiate use. 4
13 lip 2012 · The article provides pertinent information about interpretation of urine drug testing, which is separated into six categories: which drugs and metabolites to test for; which analytical cutoffs to use; pain medication metabolism; identification of alcohol use; determination of patient compliance; and which patient groups to consider for more ...
18 mar 2017 · In this report, we review technical information related to detection methods of urine drug tests that are commonly used and provide an overview of false-positive/false-negative data for commonly misused substances in the following categories: cannabinoids, central nervous system (CNS) depressants, CNS stimulants, hallucinogens, designer drugs, a...
The method is able to detect small quantities of a substance and confirm the presence of a specific drug (eg, morphine in an opiate screen). It is the most accurate, sensitive, and reliable method of testing; however, the test is time-consuming, requires a high level of expertise to perform, and is costly.
A positive urine test for opiates or opioids or their metabolites indicates that an agent from the class is present in the body, within the testing limitation of the assay. The results do not identify the dose, route, source, specific timing, or nature of the exposure (e.g., intent).
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 benzodiazepine or ...
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