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Identifies: A protein that is a sensitive and specific marker of carcinomas primary to the breast. Can also be expressed in a subset of salivary gland tumors as well as ovarian carcinomas. 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