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Can lidocaine viscous cause the metabolite benzoylecgonine in a drug test?

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Forenzics 6 Jul 2014

I'm assuming your asking if lidocaine can cause a false positive as benzoylecgoine or cocaine. The answer is NO. If you have done cocaine you will test positive for BZE if not and only taking lidocaine patches or the cream then you will not be positive. I am a forensics toxicologist I review drug test daily to determine if they are positive or negative for any particular drug ordered by the doc. BZE is not a metabolite of lidocaine.

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