Cephalexin False Positive For Cocaine?

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Can cephalexin 500mg cause a false positive for cocaine on a drug test?

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I was given a swab test by my doctor after taking cephalexin 500mg and I don't use cocaine and it came up positive for cocaine. Does cephalexin 500mg show a false positive for cocaine?

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Do cephalexin and ibuprofen cause a false positive for cocaine?

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I took cephalexinn 500 mg and when I took a drug test it came out positive for cocaine - but I don't do cocaine. Does cephalexinn cause a false positive?

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Top Answer
I found nothing conclusive about Cephalexin affecting a drug test for cocaine. The only thing which I found is an article from the NIH, which states: "As a result of administration of cephalexin, a false-positive reaction for glucose in the urine may occur". Not sure which lab test you had done, or exactly what it was looking for - wish I could share something more definitive!
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