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Tag: Confirmatory test

Explore our medication guides and pharmacology articles within this category.

Understanding What Medications Show Up as TCA (Tricyclic Antidepressant) in Drug Screens

4 min read
According to various toxicological reports, numerous medications, including over-the-counter antihistamines like diphenhydramine, are known to cause false-positive results on urine drug screens for tricyclic antidepressants (TCAs). Understanding what medications show up as TCA is crucial for anyone undergoing drug screening, as a false result can have serious consequences.