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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Do Lidocaine And Marcaine Cause False Positive Test Result For Cocaine?

I have interstitial cystitis and give myself home treatments via catheter with lidocaine, Marcaine and heparin and tested positive for cocaine (which I do not use) Could the intravascular use of these drugs cause a false positive? I use others drugs for this condition as well, but wondered if these would be the ones to suspect?
Tue, 10 Feb 2015
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Do Lidocaine And Marcaine Cause False Positive Test Result For Cocaine?