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can Lidocaine cause false positive for coaine on a dip stick urine test?

Posted by robert daniel

My girlfriend is on probation and her po says she has a "dirty" toxicology test for "coke". She swears to me she did not use any "coke" . She does have pain patches that are Lidocaine based. can they give a false + test? Probation uses Dip Stck type tests.
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