Why would a drug test b positive for Barbituates after taking antibiotics?

Is there any reason a drug test would be positive for barbituates after taking antibiotics? Could the combination of antibiotics and a local antistetic cause this??
Answer:
As far as a screening test, many things can register as a false positive. Screening tests aren't designed to be a confirmation of barbiturates. Some folks are to cheap to follow it up with a confirmatory test. If you're certain you didn't take barbiturates, insist on a confirmatory test. Confirmatory tests are much more expensive, but rarely have false positives. Neither should register positive for Barbiturates in a confirmatory test.Local anesthetics contain no barbiturates. Certainly antibiotics don't.

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no - but next time eat a poppy seed muffin for breakfast and you will pop hot as poppies are the source for ------.

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The anesthetic might be a barbituate of some kind. The antibiotics have nothing to do with it.

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