Alternate Test Names:
MCPyV; MCPV

Methodology: IHC

Clinical Significance:
MCPV is suspected to be an etiological agent in the majority of cases of Merkel cell carcinoma, and has been reported to be identified by immunohistochemistry in up to 80% of these tumors. MCPV is not detected in non-Merkel cell neuroendocrine tumors.

Organ: Skin & Mucosa

Disease State: Carcinomas of Unknown Primary, Metastatic Carcinoma

CPT Code(s): 88342 or 88341 (reference only; CPTs may vary)

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