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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Can Amoxicillin Show False Positive For Cocaine?

Yes i was kicked out of my pain managment program.I had just started for the 1st time last month.I was in a really bad car accident 2 months and i m having surgery next month.She said i tested positive for cocaine and i have never tried that in my life.I did some research and noticed that amoxicillin has been known to come up positive for that drug.I had been on the antibiotic during the same time as my drug test and forgot to put that on my consent form.I was going to go in tomorrow and demand to speak to someone about this.How do you think I should handle this and what would you do I d really appreciate some help!
Thu, 13 Aug 2020
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General & Family Physician 's  Response
Hi,

Generally, antibiotics do not affect drug test but it can rarely cause a positive drug test. The half-life of Amoxicillin is 61.3 minutes. Around 60% of an orally administered dose of Amoxicillin is excreted in the urine within 6 to 8 hours. Detectable serum levels are observed up to 8 hours after an orally administered dose of Amoxicillin.

Take care. Hope I have answered your question. Let me know if I can assist you further.

Regards,
Dr. Saranya Ramadoss, General & Family Physician
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Can Amoxicillin Show False Positive For Cocaine?

Hi, Generally, antibiotics do not affect drug test but it can rarely cause a positive drug test. The half-life of Amoxicillin is 61.3 minutes. Around 60% of an orally administered dose of Amoxicillin is excreted in the urine within 6 to 8 hours. Detectable serum levels are observed up to 8 hours after an orally administered dose of Amoxicillin. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Saranya Ramadoss, General & Family Physician