What would cause a false positive for Darvocet?

A false positive for Darvocet, which contains propoxyphene and acetaminophen, can occur due to cross-reactivity with other medications or substances that are structurally similar. Certain pain relievers, particularly those in the opioid category, might trigger a false positive in drug screenings designed for opiates. Additionally, consuming foods or supplements that contain poppy seeds can sometimes lead to misleading results in opioid tests. It's essential for individuals to inform testing facilities of all medications and dietary habits prior to testing.