Question 1

why do ppl keep telling me that trazodone will show up in my 10 panel drug screen as a false positive? is there any facts to this ? i have a pre-employment 10 panel drug sreen today why is everyone saying i will test false positives for amphetamines?

Accepted Answer

: According to an article (J Anal Toxicol. 2011 Jul;35(6):364-8) The trazodone metabolite meta-chlorophenylpiperazine can cause false-positive urine amphetamine immunoassay result.

Question 2

i am wearing a sweat patch for drug screening & it came up positive for meth & i haven't used at all. i did 2 hair folicle test and the first can positive for meth. haven't used in over 3mo on hydroxizine can this cause false positive?

Accepted Answer

: Methamphetamine use of any kind or quantity will be picked up on drug tests for approximately 90 days. (plus or minus 10-15 days) Hair follicle tests can be positive for 6  months. Hydroxizine is not known to cause false positives for Meth. Ask for another test to be done or more specialized test such as gas chromatography-mass spectrometry (GC-MS) or high-performance liquid chromatography (HPLC)

Question 3

can provigil cause positive drug test for meth?

Accepted Answer

It should not: Although Provigil is a stimulant of sorts, its chemical makeup is dissimilar to amphetamines and should not cause a false positive drug test.

Question 4

what medicine can cause a positive on drug test for amphetamines?

Accepted Answer

Careful: Drug tests may not always determine specific drugs and relatives of drugs. Diet pills and cough meds and antihistamines can cause positive tests for amphetamines and pain meds can cross react.

Question 5

what to do if i failed a drug test, testing positive for amphetamine. i had previously taken nuvigil, could that b the cause?

Accepted Answer

Not if they did: confirmatory testing, which is required in forensic settings where drug testing is done under some legal compulsion.  However, even if they just did screening tests, Nuvigil and Provigil are not chemically related to amphetamines and would not give a positive result.

Question 6

can using meth cause false positive pregnancy test results?

Accepted Answer

: No, abusing "meth" does not cause positive pregnancy tests.  But this is indeed a deadly habit, and you are urged to address this ASAP, especially if you are about to have a baby.  Contact a drug rehab program now, get off meth and all recreational drugs and reclaim your life.  It is not too late.

Question 7

what could cause me to test positive for methamphetamine and amphetamine on a urine drug test that was confirmed using gc-ms when i do not use drugs?

Accepted Answer

What DO you take?: Someone else's specimen may have been mislabeled as yours. Or, you may be taking a medication that is "cross-reactive" with amphetamines and caused a false-positive result. Labs usually include such cautionary information in their reports. Go over the lab report and your meds with the ordering physician.

Question 8

will taking 1 3 dimethylamylamine (dmaa) cause a false positive for any of the following drugs: cocaine, opiates, amphetamines, or phencyclidine (pcp)?

Accepted Answer

Yes it could: Dmaa may cause heart attacks by elevating blood pressure in users.  Not only can it cause false positives on drug tests for amphetamines, it's been banned by the fda because of the above dangers. World antidoping agency also bans it for competitive athletes. http://www.stripes.com/news/fda-orders-halt-to-sale-of-products-containing-dmaa-1.175996.

Question 9

in mid nov, 2012, i used crystal meth and marijuana pills only one time. been clean since.  i have been clean for almost four months now. will this cause my drug hair test to be positive next week?

Accepted Answer

Probably. : Best to stop using illicit drugs. Get help with aa/na.

Question 10

i recently tested positive for amphetamines and methamphetamines. i take prescription wellbutrin and vistaril. but i honestly do not and never have used meth. what could have caused me to test positive for both drugs?

Accepted Answer

: There can be false positive results which appear on toxicology screens secondary to prescription medications and laboratory errors.  Discuss results with your doctor, and if necessary and vital, repeat study while placing your regular medications on hold if this is safe for you.

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Common substances causing false positives for amphetamines in drug tests

A member asked:

Why do ppl keep telling me that trazodone will show up in my 10 panel drug screen as a false positive? is there any facts to this ? i have a pre-employment 10 panel drug sreen today why is everyone saying i will test false positives for amphetamines?

A member asked:

I am wearing a sweat patch for drug screening & it came up positive for meth & i haven't used at all. i did 2 hair folicle test and the first can positive for meth. haven't used in over 3mo on hydroxizine can this cause false positive?

A member asked:

Can provigil cause positive drug test for meth?

A member asked:

What medicine can cause a positive on drug test for amphetamines?

A member asked:

What to do if i failed a drug test, testing positive for amphetamine. i had previously taken nuvigil, could that b the cause?

A member asked:

Can using meth cause false positive pregnancy test results?

A member asked:

What could cause me to test positive for methamphetamine and amphetamine on a urine drug test that was confirmed using gc-ms when i do not use drugs?

A member asked:

Will taking 1 3 dimethylamylamine (dmaa) cause a false positive for any of the following drugs: cocaine, opiates, amphetamines, or phencyclidine (pcp)?

A member asked:

In mid nov, 2012, i used crystal meth and marijuana pills only one time. been clean since. i have been clean for almost four months now. will this cause my drug hair test to be positive next week?

A member asked:

I recently tested positive for amphetamines and methamphetamines. i take prescription wellbutrin and vistaril. but i honestly do not and never have used meth. what could have caused me to test positive for both drugs?

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