False Positives On Drug Tests

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Michelle Says:

I was told I failed a drug screen and must take all medications in to check them. I take advair, ipratropium, and albuterol inhaler for asthma. I also take allegra D and benadryl for allergies. I sometimes take an over the counter diet pill called phentramin D. Would any of these cause false positives on a standard UA?

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Verwon Says:

What did you fail for? Was it opiates, amphetamines, or something else?

The Diphenhydramine in Benadryl can cause false positives for Benzodiazepines, PCP and tricyclic antidepressants.


It could also be something in the Phentramin_D, but I can't find a listing that includes the exact ingredients. Do you happen to know what's in it?

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Deb Says:

My son 37yrs old was given 7.5mg loratabs for dental pain on feb 24 he took more than he was suppose to because he was in so much pain his probation officer urine tested him on the 28th of feb he failed for oxcodone said the number was around 100. they then sent the sample to the lab that showed a level of 278 using the gas test I think its called gc/ms what is the possible of a false positive or possible contaminated equip/? i am thinking about having the test redone with another lab at this time hes facing 3yrs jail time .he swares he didnt take anything but what the dr gave him over the counter he took BC powders,ibuprofin and exposed to albuteral trying to give his son some treatments. I had read that taking more that prescribed will cause that or am i waisting my time for the retest thank you so much I really need some help

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birdgirl Says:

I have been accused of using meth because I took a allegra D . It was a the ingredient that is not in the over the counter type that caused the false positive for meth . So if you have to drug test be sure to tell the Dr if you took any precription strength allegra D .

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Kevin Says:
via mobile

I recently tested positive for meth and amphetamines by taking prescribed breathing treatments for bronchitis it was Albuterol in a nebulizer and also Ventolin inhaler

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Leigh Says:

I have been getting g positive test results for opiates, methamphetamine & THC. Marijuana is legal in Colorado so THC is not my concern. I have multiple disabilities& take the following prescriptions: cymbal ta 30mg; cyclobenzaprine 10mg; meloxicam 15mg; hydrocodone/acetaminophen5-325, ibuprofen 800mg; tramadol 50mg; &pro air hfa albuterol sulfate inhaler. Can you tell me what these will cause a positive drug test result for?

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Summerflip Says:
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I'm assuming you've figures this out, but the opiates are the tramadol and hydrocodone. I've read multiple things tonight say albuterol can false positive for methamphetamines.

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