Post

I updated my table of medications and other drugs that can make urine drug screen false-positives, including adding a column for fentanyl:

friendly reminder that urine drug screens are bad tests, they miss a lot of things and a lot of common/benign medications can trigger false positives it's basically an EM boards question to NOT make clinical decisions based on UDS

Idk if this is still true (or if it ever actually was) but every time urine drug tests come up I think about how you used to be told to avoid poppyseed muffins and bagels before them because they could trigger false positives for opiates