List of false positives for amphetamines

    • [PDF File]False-Positive Interferences of Common Urine Drug Screen ...

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      Cross Reactants /potential reactants and cross-reactants Cross reactivity of structrally similar substances can be a problem associated with immunoassay methods, which can result in false positive or negative results. Screening technologies are predominantly immonoassay techniques which have proven to be highly sensitive but are of limited

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    • [PDF File]DESCRIPTION OF DRUG OF ABUSE TESTING AT UIHC

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      running out early; false negative (incorrect use of EIA rather than GCMS testing); urine adulterated . False positives. Are the results due to illicit use, a false positive on the screen, or a known metabolite of a prescribed medication? In considering prescribed medications, false positives on EIA (and GCMS where specified) may result from:

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    • [PDF File]Cross Reactivity in Drugs of Abuse Screening 2

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      AMPHETAMINES BARBITURATES METHADONE PHENCYCLIDINE (PCP) Amantadine (Symmetrel) [Parkinson’s dz] Ibuprofen, Naproxen [Anti-inflammatories] Chlorpromazine (Thorazine) [Antipsychotic]

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    • [PDF File]Puet MARRCH presentation handout 103017

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      of false-positive results depends on the specificity of immunoassay used and the drug under detection. Immunoassay results for marijuana and cocaine metabolites are related to very few false-positives while the results for amphetamines and opiates are related to a higher number of false-positives (1). Finally, to reduce false positive results,

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    • AMP Cross-Reactivity Drugs | What Causes Amphetamine False Pos…

      both promethazine and chlorpromazine can cause false-positive amphetamines UDS and recommend confirmation of any pre-sumptive positive results with a secondary method (1). The commonly prescribed antidepressant, trazodone, has been reported to cause false positives in 3,4-methylenedioxymethamphetamine (MDMA) UDSs. A study con-

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    • [PDF File]Pain Management Opioid Safety - United States Department ...

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      Unexpected Positives: Cross-reactivity Immunoassay False Positives Amphetamines Amantadine Aripiprazole Brompheniramine Bupropion Chloroquine Chlorpromazine Ciprofloxacin Desipramine Doxepin Ephedrine Fluorescein Fluoxetine Ginkgo Labetalol MDPV Metformin Methylphenidate Metronidazole Ofloxacin Phentermine Phenylephrine Promethazine Propranolol

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    • [PDF File]Cross Reactants /potential reactants and cross-reactants

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      Case Reports of Aripiprazole Causing False-Positive Urine Amphetamine Drug Screens in Children Justin Kaplan, PharmD a,b, Pooja Shah, PharmD , Brian Faley, PharmDa,b, Mark E. Siegel, MDc Urine drug screens (UDSs) are used to identify the presence of certain abstract medications.

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    • [PDF File]Ordering and Interpreting Urine Drug Tests

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      Pain Management Opioid Safety A Quick Reference Guide (2014) VA Academic Detailing Service ... (e.g. positive for amphetamines) AND is: ... resulting in false-positive for marijuana mainly consist of ibuprofen and naproxen and modern tests do not result in false positives ; + THC concentrations in hemp products are low enough to

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    • [PDF File]AMPHETAMINES BARBITURATES METHADONE …

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      False positives . False positives are much less common with the current generation of drug of abuse screening than with older versions of these assays. This is consistent with experience at University of Iowa Hospitals and Clinics in the confirmation tests that were sent out over

      common false positives for amphetamines


    • [PDF File]Case Reports of Aripiprazole Causing False-Positive Urine ...

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      CROSS REACTIVITY IN DRUGS OF ABUSE SCREENING Immunoassay screens such as the ones used by STERLING are selected for their ability to detect drugs of a specific class with a high degree of reliability. Immunoassay reactive substances fall into two categories – members of the targeted drug class that are expected to be detected (true positives)

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