[petre]

I has a friend who tested positive on urine test despite not ever consuming MJ. Turns out he took ibuprofen and the test came out positive.

[14]

Even if your friend truly did not consume marijuana how do you conclude it was the ibuprofen that caused that failed test?

[petre]

It was the only medication he was taking at the time because of a tooth ache. The authority requiring the test let it pass.

[14]

I would still want to rule out other factors before concluding ibuprofen had anything to do with it such as a mix up in samples or the tester doing something wrong like contaminating the tests. A single data point in this instance truly shows nothing.

[petre]

It's also on the list of drugs that could trigger a false positive in an urine test:

https://www.uspharmacist.com/article/urine-drug-screening-mi...

”Nonsteroidal anti-inflammatory drugs (NSAIDs) have also been shown to interact with UDS immunoassays. Both ibuprofen and naproxen have been documented to cause false-positive barbiturate4 and cannabinoid1-4 levels. In addition, ibuprofen can cause a false-positive PCP level.1-2,4”

[14]

Thank you for the information I have never heard of that. Now I understand why you would think that. In Canada we, from what I have see, do very little drug testing. I have never been asked to take one and work medical field. I believe oil rig workers are sometimes subjected to them. It’s just not that common. But if I did do one now I will avoid Ibuprofen and similar products.