Can Hydrocodone Cause False Positive For Hydromorphone?

Posted on Sat, 1 Apr 2017

Question: I take hydrocodone and xanax. My urine test indicated that I took and Hydroonorphone and Oxapam showed in the test. I've never taken either one. How can that be possible.

Answered by Dr. Alexander H. Sheppe (9 minutes later)

Brief Answer:
Consultation

Detailed Answer:
Hello, and thanks for your question.

Hydrocodone is chemically almost the same as hydromorphone, so you will test positive for both. The same is true for Xanax and oxazepam -- they are chemically very similar and you will always test positive for both.

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Above answer was peer-reviewed by : Dr. Arnab Banerjee