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A member asked:

My grandmother recently had a stroke, she was given a routinely urine test and it came back positive for cocaine, my grandma has never touched it?

A doctor has provided 1 answer

See details: False positive tests occur 5-10% of the time. Certain antibiotics, for instance, may cause a false positive test for cocaine. Ignore the test results.

Dr Wyatt agreed

Answered 7/31/2014

3.8k views

Thank

Related Questions

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Ihad urine drug screen test possitive for cocaine. Iwas on amoxicillin. Itsbeing retested can they find out if itwas cocaine or amoxicillin???

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I recently had a false positive urinalysis for cocaine and have been clean for 4 years. I am having urine retention and flow issues however. My parole?

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How long does cocaine stay in your urine and turn drug test positive?

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I used cocaine 2 weeks ago. Will i test positive in a urine drug test?

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I had cocaine weekend and monday did urine test friday 4pm, can its be positive?

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