Tzanck test


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Viral lesion culture
Viral lesion culture
Definition

The Tzanck test is a method of testing sores for the herpes simplex virus (which causes cold sores, fever blister, or genital sores), or varicella-zoster virus (which causes chickenpox and "shingles").


Alternative Names

Herpes skin test; Chicken pox skin test


How the test is performed

The sore is scraped and the scraping is put on a slide and stained. The health care provider then examines it under a microscope.


How to prepare for the test

There is no special preparation necessary.


How the test will feel

When the sore is scraped or rubbed, there may be mild discomfort.


Why the test is performed

The test may help diagnose or confirm an infection with one of these two viruses. This test cannot distinguish between these two viruses.



Review Date: 02/10/2006
Reviewed By: Kenneth Wener, M.D., Division of Infectious Diseases, Beth Israel Deaconess Medical Center, Boston, MA. Review provided by VeriMed Healthcare Network.


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