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I took drug test today and it was positive for tca, I regularly take an OTC sleep aid with diphenhydramine. Couldn't have caused the false positive?

1 doctor weighed in
Dr. Alan Wartenberg
Addiction Medicine

In brief: "tca"????

did you mean THC (marijuana or cannabis)? TCA medically usually means tricyclic antidepressant, and these are actually chemically similar to benadryl (diphenhydramine).
If all that was done was a SCREENING test, there are lots of potential false positives, and if used for legal purposes, all screening tests should be confirmed with a more sophisticated test, usually gas chromatography/mass spectroscopy.

In brief: "tca"????

did you mean THC (marijuana or cannabis)? TCA medically usually means tricyclic antidepressant, and these are actually chemically similar to benadryl (diphenhydramine).
If all that was done was a SCREENING test, there are lots of potential false positives, and if used for legal purposes, all screening tests should be confirmed with a more sophisticated test, usually gas chromatography/mass spectroscopy.
Dr. Alan Wartenberg
Dr. Alan Wartenberg
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