Asacol Mesalamine/mesalazine Can Cause False Positives On Drug Tests

1 Reply Updated September 21, 2016

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Nina Says:
Sun, Dec 15 '13, 11:41 AM via mobile

This is active ingredient in Asacol. False positive have been observed in laboratory testing. Now I just have get letter from doctor.
Drug/Laboratory Test Interactions

Several reports of possible interference with measurements, by liquid chromatography, of urinary normetanephrine causing a false-positive test result have been observed in patients exposed to sulfasalazine or its metabolite, mesalamine/mesalazine.

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Scott124 Says:
Wed, Sep 21 '16, 2:05 AM via mobile

I have recently failed a drug test at work I'm on asacol and benzoylecgonin showed up in my system could this be related?

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