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Can Marcaine cause a positive test for cocaine after a

Patient: Can Marcaine cause a positive test for cocaine after a few days of being injected

 

 

Doctor: HelloWelcome to Ask The Doctor.When testing for cocaine, the lab is actually looking for its unique metabolite, be nzoylecgonine. No other drug has this metabolite. If only a screening test is used, such as immunoassay, there is a possibility of Marcaine (bupivacaine) giving a false positive for cocaine. However, this can be clarified by using a confirmation test. Both a screening and confirmation test should be carried out if a person tests positive for cocaine.I hope it helps.Stay Healthy

 


 

 
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Dr. Jimmy Obaji M.D.

Dr. Jimmy Obaji M.D.

Dr. Jimmy Obaji completed his residency in Family Medicine at the University of Manitoba. He currently operates a walk-in-clinic in downtown Toronto.

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