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Most cough products which contain decongestants (pseudoephedrine, ephedrine, synephrine, phenylpropanolamine) can cause false positives with methamphetamine drug triage tests. The amount necessary which could cause a false positive depends on the detection sensitivity of the specific analyzer being used (they have different detection thresholds).

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Q: Which over the counter cold medicines can cause a false positive UA for Meth and how muchdo you have to take to cause the false positive?
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None.


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What amount of phenylephrine in over the counter drugs could make your drug test positive for meth?

other cold remedies can apparently produce false reports of methamphetamine usage. Some additional over the counter medicines that may cause various kinds of drug test interactions include Alka-Seltzer plus, Allerest, Bronkaid, Contac, Donnagel, Sinuntab, and Sudafed.


Can over the counter cough and cold pills show up in a drug test?

Yes, many over the counter cold, asthma, allergy remedies, diet pills can show up as positive in the drug test for various kinds of drugs. Cold remedies that contain codeine can cause a positive result for morphine. Ibuprofen, contained in Advil, Nipping, and Mortin, can make a positive result for marijuana. Some additional over the counter medicines like Alka-Seltzer plus, Allerest, Bronkaid, Contac, etc.. may cause various kinds of drug test interactions. Add the name of medication you use or do your own research. Also you can ask the company doing the drug test to provide you a list of all prescription drugs, over the counter medications and foods that may interfere with the drug test results.


Can NyQuil cause a positive for amphetamines in a urine sample?

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Can you test postitive for meth if taking ephedra?

Yes! Since Meth is made from it, if you take enough of it, you can eventually test positive for methampethamines. You can also test positive for meth if you take a lot of Sudafed and other cold medicines.


What can cause a GC-MS test to have a false positive for morphine?

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Can abuteral sulfate cause a false posivtive for meth what other asthma medications may show up in lab test false positive for meth?

What kinds of asthma medicines may cause a false positive lab test foe meth? Will they show up as pharmaceutical or something else?


What over the counter sinus medication would most likely result in a false positive of amphetamines on a urine drug screen?

OTC (over-the-counter) medications such as decongestives that have Epinephrine or Ephedrine in it. If you don't have to ask the Pharmacist to get the medication for you and you were able to get it off of the shelf yourself, then you have nothing to worry about. All medications that can cause a false positive like this are behind the Pharmacist's counter.