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17.01.2022 Drug Testing False Positives And False Negatives. False positive is a positive result when testing a negative sample, a false negative is negative result when testing a positive sample. It is normal with drug testing devices that there will be false results sometimes due to either contamination of the sample, or close molecular chemical similarities to the drug being tested.... In most cases the result is actually NOT a false positive technically speaking, because the medication the person is already taking IS actually that drug! For example, a person might be taking a pain medication and then test positive for opiates. What they actually tested positive was for codeine, which is an opiate! Check out possible chemicals that could cause false positives with the following url... https://ozdrugtesting.com.au/drug-testing-false-positives-/ Many medicines you can purchase at your local chemist containing pseudo-ephedrine, ephedrine, or other sympathomimetic amines tend to interfere with urine screening tests and cause false positive results for amphetamines, but do not cause positive test results in the gas chromatography/mass spectrometric, or GC/MS, confirmation, thus pose no serious challenge in drugs-of-abuse testing. In contrast, several prescription medicines containing opioids, amphetamines, or other ingredients can cause positive confirmed results in DOA testing. Eg Use of Marinol to control severe pain produces a positive confirmatory test for marijuana metabolite (11-nor-9-carboxy9 -tetrahydrocannabinol; THC-COOH) in urine. It is important for an individual undergoing workplace drug testing to report the use of such prescription medication and name of the prescribing doctor so the Medical Review Officer can contact the doctor and verify medical use of such controlled substances. Otherwise, employment may be denied or other adverse action may be taken by the employer against that individual. Check out more at https://ozdrugtesting.com.au/drug-testing-false-positives-/
15.01.2022 Passing drug testing Having to produce a urine or saliva sample for passing drug testing can be the most nervous and anxious thing you will ever have to do, especially if your job depends on it! There are loads of different ways to pass a drug test in theory, but seldom work....Continue reading
