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CD22 pin



Methodology: IHC

Clinical Significance:
CD22 is a B cell specific surface antigen expressed in mature B cells, and positive on B-cell neoplasms such as mantle cell lymphoma (MCL) and chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL). Subcellular Localization: Membranous


Disease State: Chronic Lymphocytic Leukemia / Small Lymphocytic Lymphoma (CLL/SLL)

CPT Code(s): 88342 or 88341 (reference only; CPTs may vary)

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