How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Family Physician Your Own Question
Family Physician
Family Physician, Board Certified MRO
Category: Drug Testing
Satisfied Customers: 12816
Experience:  Medical Review Officer - Physician Trained and certified in drug test interpretation
Type Your Drug Testing Question Here...
Family Physician is online now
A new question is answered every 9 seconds

Can Benzocaine and/or Lidocaine cause a false positive for

This answer was rated:

Can Benzocaine and/or Lidocaine cause a false positive for cocaine during a urine drug screen?
While "benzocaine" and "lidocaine" sound like cocaine, they are chemically unrelated and there is no scientific evidence supporting a claim that either of these medications would cause a false positive for cocaine.

You should check with the lab to be sure that the drug screen was performed with GC/MS confirmation, since this test methodology eliminates the possibility (no matter how small) of false positives.
Family Physician and other Drug Testing Specialists are ready to help you

Related Drug Testing Questions