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Identifies a subset of epithelia and carcinomas. CK17 expression can help identify primary carcinomas of the pancreatobiliary tract, distinguishing them from ovarian mucinous adenocarcinomas and carcinomas of the stomach, among others. Subcellular Localization: Cytoplasmic
Disease State: Carcinomas of Unknown Primary
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