Will heroin cause someone to test positive for oxycodone on rapid urine screen?

No. Heroin will: show up as an opiate but not necessarily oxycodone. However, many point-of-care drug screening tests include specific screening for oxycodone. Also, if the heroin was cut or contaminated with oxycodone, both can show up on a urine drug screen. If you or a loved one has a heroin habit, there are some fine outpatient treatment centers in the Cinci area. Dr. Anne