Can Prescription Medication Cause A False Positive?

Before you take a drug test, it’s important to answer the following question: Can prescription medication cause a false positive? The short answer — yes.


Here’s a list of medications that can cause a false positive:

  • Amitriptyline — can test positive for LSD
  • Bupropion (generic Wellbutrin) — can test positive for amphetamine, methamphetamine, and LSD
  • Dextromethorphan (found in Robitussin, Delsym and other over-the-counter cough medications) — can test positive for opiates and PCP
  • Diltiazem — can test positive for LSD
  • Diphenhydramine (Benadryl) — can test positive for LSD
  • Ibuprofen/Naproxen (Advil/Motrin and Aleve) — can test positive for barbiturates, THC (cannabinoid), and PCP.


And that’s just a few. Make sure to do your research before you go and get any type of blood work or drug testing done to ensure these false positives don’t happen to you.


This drug test form must be completed before check out. The info is required in order to create your donor pass. A donor pass must be presented at the collection site with a valid photo ID. Once the form is complete, you will be able to proceed and check out. Your donor pass will be emailed to you, in most cases same day, or within 24 hours. ALL DONOR PASSES ARE VALID FOR (7) DAYS. Collection site is selected based on the zip code you provided.

Once the order is submitted there are NO REFUNDS. You can only request an extension or drug test credit in case of cancelation.

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