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CD31 pin



Methodology: IHC

Clinical Significance:
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


Disease State: Large Cell Undifferentiated Malignant Neoplams

CPT Code(s): 88342 or 88341. The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Turnaround Time: Within 1-2 business days of receipt

Schedule: Monday - Friday

Specimen Requirements:
• 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