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What Causes False-positive Result For Methamphetamine In A Urine Drug Test?
Question: I'm being told that I tested positive for methamphetamine. I don't do illegal drugs. What could be the cause of such a result.
Brief Answer:
been seeing a lot of that lately
Detailed Answer:
something's like going around on amphetamine positivity on urine tests, like a virus going around.
Seriously, cold medications such as decongestants are very very similar in structure to amphetamine. This includes pseudaphed, albuterol, and likely also their derivatives (salbuterol in advair for example). Also,
"The literature contains reports of false-positive amphetamine UDSs with multiple antidepressants and antipsychotics. "" 2 cases of presumed false-positive UDSs for amphetamines after ingestion of aripiprazole"
http://www.ncbi.nlm.nih.gov/pubmed/0000
then there are energy drinks and herbal energy supplements.
http://www.ncbi.nlm.nih.gov/pubmed/0000
The later are not always "False" because there have been reports of them being laced with amphetamines. Likewise "bath salts" have amphetamine like effects and it would XXXXXXX no one if they were laced with amphetamine. Likewise, adderal, and all other ADHD medications either ARE amphetamine or so close to amphetamine as to make no-never-mind. (not false).
Zantac
http://www.ncbi.nlm.nih.gov/pubmed/0000
which can be found in a better test to NOT be amphetamine (false positive, but the better test GCMS can differentiate it from a true positive).
Hate to mention that mostly we don't know what causes the false positives for amphetamine. This isn't that rare. Often, probalby MOSTLY, the test can be shown to be false with GCMS even when we never figure out what the cause of the false positive was.
been seeing a lot of that lately
Detailed Answer:
something's like going around on amphetamine positivity on urine tests, like a virus going around.
Seriously, cold medications such as decongestants are very very similar in structure to amphetamine. This includes pseudaphed, albuterol, and likely also their derivatives (salbuterol in advair for example). Also,
"The literature contains reports of false-positive amphetamine UDSs with multiple antidepressants and antipsychotics. "" 2 cases of presumed false-positive UDSs for amphetamines after ingestion of aripiprazole"
http://www.ncbi.nlm.nih.gov/pubmed/0000
then there are energy drinks and herbal energy supplements.
http://www.ncbi.nlm.nih.gov/pubmed/0000
The later are not always "False" because there have been reports of them being laced with amphetamines. Likewise "bath salts" have amphetamine like effects and it would XXXXXXX no one if they were laced with amphetamine. Likewise, adderal, and all other ADHD medications either ARE amphetamine or so close to amphetamine as to make no-never-mind. (not false).
Zantac
http://www.ncbi.nlm.nih.gov/pubmed/0000
which can be found in a better test to NOT be amphetamine (false positive, but the better test GCMS can differentiate it from a true positive).
Hate to mention that mostly we don't know what causes the false positives for amphetamine. This isn't that rare. Often, probalby MOSTLY, the test can be shown to be false with GCMS even when we never figure out what the cause of the false positive was.
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Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar
Answered by
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