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A 39-year-old member asked:

will benzocaine cause a false positive for cocaine?

2 doctor answers4 doctors weighed in
Dr. Kevin Nasky
Psychiatry 16 years experience
No: Use of anesthetic agents, including benzocaine, tetracaine, and lidocaine, should not cause false-positive Cocaine test results in urine testing for any drugs of abuse, including cocaine.
Dr. Alan Ali
Dr. Alan Ali answered
Psychiatry 32 years experience
Benzocaine: For Benzocaine topical, not likely.

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A 46-year-old member asked:

Can benzocaine cause false positive for cocaine?

1 doctor answer4 doctors weighed in
Dr. Susan Uhrich
Psychiatry 36 years experience
In short,: No. There are no structural similarities between these 2 drugs.

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Last updated May 25, 2015

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