Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.
What the test is
Screens can have false positives; a confirmation test is used for important decisions.
Fentanyl often needs a separate test.
Why it's done
- Emergency care for confusion or possible overdose
- Pain management or addiction treatment programs
- Work or legal requirements
Getting ready and what happens
- Tell the tester about all prescription and over-the-counter medicines and supplements.
How the test is done
- You pee into a cup, sometimes with observation.
What the results mean
Positive screen
Means a drug or similar substance may be present. Some medicines cause false positives; confirmation testing is more accurate.
Questions to ask your provider
- What do my results mean for me?
- Do I need to repeat this test or have other tests?
Related conditions
Related medicines
Sources
Last updated 2026-11-13.