Ibuprofen causes false positive urine test results for cannabis?

Question

Just wondering if the above is true. A friend of mine failed his urine test for marijuana. But he has been taking these medications - "Fluimucil", Ibuprofen painkillers, and some vitamins which include B2 (riboflavin). Anyone knows how these would have affected his results? The reading was something like 200ng or some like that. Thanks a bunch!

Answer 1

Ibuprofen is a common pain reliever and anti-inflammatory which even in low doses used to cause a false positive for marijuana/cannabis on the EMIT test. The EMIT has been changed to use a different enzyme to eliminate these drug test false positives. But recent evidence suggests that Ibuprofen taken in very high doses, along with other anti-inflammatories such as Naproxen will still interfere with the EMIT test.

Answer 2

Most tests test for specificaly THC...something that will not be found in IBprofin. but all tests can goof up especially the cheap ones

Answer 3

He's just pulling your leg.

But that's the story he wants you to think is true.