Alternate Test Names:
Identifies PECAM-1, a cell surface adhesion molecule expressed on the surface of endothelial cells and is an excellent marker of vascular neoplasms, e.g., angiosarcoma. CD31 can also be expressed by platelets, macrophages, and plasma cells.
Subcellular Localization: Membranous
CPT Code(s): 88342 or 88341
Turnaround Time: Within 1-2 business days of receipt
Schedule: Monday - Friday
• Formalin-fixed, paraffin-embedded (FFPE) tissue block or cell block - OR -
• 1 unstained slide for each test requested plus 3-4 additional unstained slides cut at 4µm