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APVILLIN
VILLIN, IMMUNOHISTOCHEMISTRY STAIN

Test Code APVILLIN 
Test VILLIN, IMMUNOHISTOCHEMISTRY STAIN 
Description Villin is a 95000D glycoprotein of microvilli associated with axial microfilament bundles of brush border microvilli in gastrointestinal mucosal epithelium. This antibody has been used to differentiate gastrointestinal (GI) carcinomas, neuroendocrine carcinomas, and ovarian carcinomas from adenocarcinomas arising in other organs. To a lesser extent, this antibody has been used to label Merkel cells in the skin.

NOTE: This test is usually ordered in conjunction with a pathology consultation. The pathology professional component will be billed separately by the consulting pathologist. 

Specimen Formalin-fixed or paraffin-embedded tissue specimen 
Reference Values An interpretive report will be provided. 
Analytic Time 2 Days 
Day(s) Test Set Up Monday through Friday 
CPT Code(s) 88342