Do medications result in false positives?

It’s remotely possible. Some prescriptions contain the same compounds as “street drugs,” and there’s no way to distinguish between the two. However, if a person has been using a drug for medical purposes, his or her medical record will reflect that use.

Some prescription diet pills contain amphetamines, and so does a common drug prescribed for Parkinson’s Disease. Again, this will be revealed on the medical record.

There is one big exception, though – you’ve heard that poppy seeds can result in testing positive for heroin? It’s true. Eating just one poppy seed bagel can result in a positive drug test.