False positive thc urine test

    • [DOCX File]www.alcoholmedicalscholars.org

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      THC reagent, when used in conjunction with UniCel® DxC 600/800 System(s) and SYNCHRON® Systems THC Urine Calibrators, is intended for qualitative determination of cannabinoids concentration in human urine. This assay provides a rapid screening procedure for determining the presence of cannabinoids in urine, using a 100 ng/mL cutoff value.

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    • [DOC File]how to pass drug tests

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      To establish the sensitivity and specificity of Sensatest One-Step Cannabinoids (THC) test kit relative to other detection of qualitative urine Cannabinoids testing, 435 samples including 185 positives and 250 negatives were studied at three independent test site using Sensatest One-Step Cannabinoids (THC) test kit. All Positive and Negative ...

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    • [DOC File]1

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      A survey conducted several years ago by the National Institute of Drug Abuse, a government agency, found that 20 percent of the labs surveyed mistakenly reported the presence of illegal drugs in drug-free urine samples. False positive test results also occur when drug …

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    • [DOC File]Medical Review Officer Manual - SAMHSA

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      6. THC The accuracy of the THC test was evaluated in comparison to GC/MS at a cut-off of 50 ng/ml of 11-nor-Δ9-THC-9-COOH. Eighty eight (88) urine specimens with GC/MS confirmed 11-nor-Δ9-THC-9-COOH concentration were evaluated in this study. The results are summarized and presented below: Positive % agreement: 95, Negative % agreement: 100

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    • 20 Medications That Can Cause a False Positive on Drug Tests - Go…

      Therefore, confirmation for a positive THC always must be established by a GC/MS lab confirmation test. Passive exposure to Marijuana smoke will not result in a positive THC urine test. Hair: very small amounts THC are deposited into hair, thus HHS proposed 1pg/mg cut-off value for screening and 0.05 pg/mg as THCA cut-of confirmation by GC/MS.

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    • [DOC File]Beckman Coulter

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      ("UrineAid") In ketoacidosis, starvation and other metabolic disorders, ketone bodies may be present in the urine and may cause a false positive on this test. Check medical history. POS = Positive . NEG = Negative pH Normal urine pH is 4.5 - 8.0. Thus, Values below …

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    • [DOC File]DRUGS OF ABUSE REFERENCE GUIDE - ELSSI Drug Testing

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      Quantitative urine confirmatory testing for synthetic cannabinoids in randomly collected urine specimens. Drug Test Anal, 7 (6): 483–493. doi:10.1002/dta.1709

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    • [DOC File]PROCEDURE

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      The assay is designed for use with human urine only. A positive result with the tests indicates the presence of a drug/metabolite only and does not indicate or measure intoxication. There is a possibility that technical or procedural errors as well as other substances and factors not listed may interfere with the test and cause false results.

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    • [DOC File]Alcohol and Drug Test and Collective Bargaining

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      To be reported positive, a specimen must test positive at or above the 50 ng/mL cutoff for the initial test and have a concentration of the delta-9 THCA that is equal to or greater than the 15 ng/mL confirmatory cutoff level. Infrequent marijuana use may cause positive initial test results for 1 to 5 days.

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    • [DOC File]PHILNOR Lab & Med Supplies - Home

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      test on your urine (a few cents). If you test positive, they must. then confirm the positive result on GC/MS, which is considerably. more expensive. . . . Incidentally, the machine which tests the hair. is a relative of the GC/MS, but is FAR more precise. It can. accurately detect levels of THC in a solution that are below 1. ng/mL!

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