Tzanck Smear

A Tzanck smear is a diagnostic test used by healthcare providers to help identify certain skin and mucous membrane infections caused by viruses, such as herpes. It involves gently scraping a small area of affected skin or a blister, then examining the cellular material under a microscope. The test looks for specific changes in the cells that are characteristic of viral infections like herpes simplex or varicella-zoster. It’s a quick and minimally invasive way to assist in diagnosing these conditions, though it doesn’t specify the exact virus. Confirmatory tests may be needed for a definitive diagnosis.