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CD57 is a cell surface-associated protein expressed on a subset of activated T cells, including so-called large granular lymphocytes, and neoplasms derived from these cells. CD57 is also expressed on a variety of neural structures. Identification of CD57-positive cells is of value in positively identifying lymphocyte-predominant Hodgkin lymphoma.
Subcellular Localization: Membranous
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