How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Dr. Thomas, MD Your Own Question
Dr. Thomas, MD
Dr. Thomas, MD, Board Certified Physician
Category: Medical
Satisfied Customers: 63757
Experience:  Internal Medicine--practice all of internal medicine, all ages, family, also Integrative, CAM, etc
Type Your Medical Question Here...
Dr. Thomas, MD is online now
A new question is answered every 9 seconds

I test positive in a urine test. I've never in my live use

Customer Question

Hi, I test positive for Benzoylecgonite in a urine test. I've never in my live use cocaine or any drugs. How is that possible?
JA: Have you seen a doctor about this yet? What medications are you taking?
Customer: I'm taken over the pharmacy counter 5 HTP and L-TYROSINE
JA: Anything else in your medical history you think the doctor should know?
Customer: I don't thing so.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Doctor about your situation and then connect you two.
Submitted: 3 months ago.
Category: Medical
Expert:  Dr. Thomas, MD replied 3 months ago.


If they did confirmatory testing, the test is not inaccurate.

In this case, the only explanation would be lab error: such as mixing up samples.

If they did not do confirmatory testing, then they can't claim a positivel.

OK, so you might have more questions or want to give me more information: Please use reply to expert if you have further questions. Also, please click a positive rating [hopefully excellent—that’s how we are paid, per rating]. If you forgot something, come back. I am here