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Alternate Test Names:
Cytokeratin 7; CK7
Identifies a subset of carcinomas. Co-analysis with expression of cytokeratin 20 can be helpful in the identification of the primary site of carcinomas presenting at metastatic sites.
Subcellular Localization: Cytoplasmic
CPT Code(s): 88342 or 88341 (reference only; CPTs may vary)
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