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Family Physician
Family Physician, Board Certified MRO
Category: Drug Testing
Satisfied Customers: 12623
Experience:  Medical Review Officer - Physician Trained and certified in drug test interpretation
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What kind of over the counter drugs can make you fail for meth

Resolved Question:

What kind of over the counter drugs can make you fail for meth and opiates?
Submitted: 1 year ago.
Category: Drug Testing
Expert:  Family Physician replied 1 year ago.
Thank you for your question:

Some additional information will help me give the best possible answer.

Was this a home test, dipstick or some other type if "instant" test OR was this test done with GC/MS confirmation?

I am traveling today, so it may take a few hours to reply to you.
Customer: replied 1 year ago.

It was a urine test. It's a cup shaped like a toilet bowl and there's 4 strips in front. I haven't had to take it but that's how my husband described it. He takes imodium at least 3 times a week and almost lives on buckley's cough syrup and has taken benylin.

Expert:  Family Physician replied 1 year ago.
Thank you:

The type of test that you describe uses immunoassay technology. These test are very non-specific; prone to false positive from a number of common medications including decongestants, blood pressure medications, over-the-counter pain medications etc.

To eliminate these false positives, the specimen needs to be tested with GC/MS (gas chromatography-mass spectrometry), since this technology does not give such false positives.
Family Physician, Board Certified MRO
Category: Drug Testing
Satisfied Customers: 12623
Experience: Medical Review Officer - Physician Trained and certified in drug test interpretation
Family Physician and other Drug Testing Specialists are ready to help you

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