Office dermatologic testing: the Tzanck preparation.
Level V
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- Record sourced from PubMed, PMID 1877427.
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Abstract
Whether a vesicobullous disease is intraepidermal or subepidermal is often difficult to determine from the clinical examination. The Tzanck preparation can provide clues that aid in the diagnosis of a number of diseases. It is particularly helpful in confirming the diagnosis of herpes infection. This article outlines the materials and steps for performing this valuable test.