False positive barbiturates urine
[DOC File]Prepared By - Beckman Coulter
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Short-acting barbiturates will generally be excreted in urine as metabolites, while the long-acting barbiturates will primarily appear unchanged. The most commonly abused barbiturates are short- to intermediate-acting agents (24 hours or less), such as secobarbital, pentobarbital and amobarbital.1 Barbiturate overdose produces shock syndrome ...
What could cause a false negative on a drug test for barbiturates? …
If a physician suspects a false positive, the laboratory should be notified and the specimen should be sent for confirmatory testing. In the scenarios above, the laboratory, which performed the UDS using the EMIT II platform, was consulted. Confirmatory testing revealed that both urine drug screens were falsely positive.
[DOC File]Beckman Coulter
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Labetalol may produce a false positive result when urine is screened for amphetamines. Care must be taken to corroborate any such result with a more specific method. ... Concomitant use of tricyclic antidepressants, barbiturates, phenothiazines or other antihypertensive agentsmay increase the blood pressure lowering effect of labetalol ...
[DOC File]OneStep Barbiturates InstaTest
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The results are summarized below showing the number of positive and negative results identified and the percent agreement between analyzers. Assay (ng/mL) Positive Negative % Agreement Barbiturates (200) 70 51 95 Barbiturates (300) 45 115 98 Analytical Recovery. Negative human urine specimens were spiked with concentrations of secobarbital.
[DOCX File]FMCSA Medical Examiner Handbook
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A. A false-positive reaction can occur if the pregnancy test is performed less than 10 days after an abortion. Performing the tests too early or too late in the pregnancy, storing the urine sample too long at room temperature, or having a spontaneous or missed abortion impending can all produce false …
[DOC File]Reliability of urine drug screens: When should you consult ...
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• devices may detect client fatigue as “positive” ... (potential false positive results) • on-site testing often does not include quality control ... Drug Approximate Drug Times in Urine. AMPHETAMINES 1 - 4 days BARBITURATES 1 - 7 days BENZODIAZEPINES 1 - 7 days CANNABINOIDS ** ...
[DOC File]Effective client abstinence monitoring via drug testing is ...
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OneStep Barbiturates InstaTest. Catalog No. 121060-50. INTENDED USE. The Atlas Link OneStep Barbiturate InstaTest is a rapid qualitative, competitive binding immunoassay for the determination of barbiturates in urine. Always justify preliminary positive and negative results with compelling clinical evidence and professional judgment.
[DOCX File]Attachment 1: Product Information for Labetalol ...
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This test does not distinguish between drugs of abuse and certain medications. It may yield preliminary positive results when prescription barbiturates, benzodiazepines, methadone, buprenorphine or oxycodone are ingested, even at therapeutic doses. There are no uniformly recognized drug levels for these prescription drugs in urine.
[DOC File]Rapid digital drug test | Pocket Labb | Portsmouth
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This handbook provides information and guidance to the certified medical examiner who performs the commercial driver medical examination. Determining driver medical fitness for duty is a critical element of the FMCSA safety program.
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