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Smoothelin pin



Methodology: IHC

Clinical Significance:
Identifies: Smoothelin, a marker of terminally differentiated smooth muscle cells, relatively specific for the muscularis propria (positive) compared with the muscularis mucosae (largely negative). Used to assess the degree of invasion of colorectal and bladder carcinomas, particularly in small biopsies. Subcellular Localization: Cytoplasmic


Disease State:

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