What prescribed meds would cause false positive for thc?

Need just a little more information:

What type of test, Blood, Hair, Urine?

Was this a drug screen or at the level of confirmation test? A screen would just report positive or negative, whereas a confirmatory test would show a numberical value.

Urine screen test

urine screen test

Provided an answer and documentation under your other post, link below

https://www.askmehelpdesk.com/medications/prescribed-meds-drug-tests-625487.html