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”