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Do Codeine and Amoxicillin cause false positive results for Cocaine?

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Posted on Wed, 18 May 2016
Question: will taking codine and amoxicillin for tooth pain and infection cause a positive result for cocaine??\
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Answered by Dr. Bonnie Berger-Durnbaugh (22 minutes later)
Brief Answer:
The amoxicillin can give a false pos for cocaine

Detailed Answer:
Hello and welcome,

I am sorry you are suffering from a dental infection. Surprisingly, amoxicillin can give a false positive for cocaine.

Codeine can give a false positive for amphetamines, and a true positive for opiates.

I hope this helps you.


Above answer was peer-reviewed by : Dr. Chakravarthy Mazumdar
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Answered by
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Dr. Bonnie Berger-Durnbaugh

General & Family Physician

Practicing since :1991

Answered : 3135 Questions

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Do Codeine and Amoxicillin cause false positive results for Cocaine?

Brief Answer: The amoxicillin can give a false pos for cocaine Detailed Answer: Hello and welcome, I am sorry you are suffering from a dental infection. Surprisingly, amoxicillin can give a false positive for cocaine. Codeine can give a false positive for amphetamines, and a true positive for opiates. I hope this helps you.