Drugs That Can Cause False Positives in a Drug Test
Knowing what drugs can cause false positives ensures that you know to know to notify the testing lab and also can identify the reason for a false positive
If you take one of the following drugs, you should make it known before submitting a urine sample. It can be more difficult to prove your innocence after testing positive. Many people wrongly believe drug tests are infallible and you may not even get the chance to defend yourself. So it's better to prepare for a possible false positive in advance.
If you take any medications, you should research the drug to see if it is known to trigger false positives. Below are 14 legal drugs that are known to cause false positives.
1. Dextromethorphan
An active ingredient in cough medicines.
2. Diltiazem
Used as a treatment for hypertension.3. Diphenhydramine
An antihistamine present in many allergy medications.
4. Metformin
A common diabetes medication
5. Pseudoephedrine
Used to treat sinus congestion.
6. Labetalol
An alpha and beta-blocker used to treat hypertension.
7. Methylphenidate
Used to treat ADHD.
8. Doxylamine
Found in many over-the-counter sleep aids.
9. Tramadol
A prescription pain medication.
10. Phentermine
A common weight loss drug.
11. NSAIDs
Found in common painkillers like Advil and Motrin.
12. Antidepressants
Many antidepressants are known to cause false positives.
13. Proton pump inhibitors
Used to treat gastrointestinal reflux.
14. Quinolone antibiotics
Used to treat urinary tract infections, sinus infections, and pneumonia, and more.