• Tech Only CPT 88342.TC
  • Tech Pro CPT
  • PowerPath Code CD23
  • Schedule Monday - Friday
  • Turn Around Time Within 1-2 business days of receipt
  • Disease State Chronic Lymphocytic Leukemia / Small Lymphocytic Lymphoma (CLL/SLL), Follicular Dendritic Cell Sarcoma, Follicular Lymphoma
  • Methodology IHC

Specimen Requirements

Formalin-fixed, paraffin embedded tissue block or cell block, or 1 unstained charged slide for each test requested plus 3-4 additional unstained slides cut at 4 microns. Adequate space on each slide for control tissue is required.

Diagnostic Utility

Expressed in a subset of activated B cells and commonly in follicular dendritic cells. Strongly expressed with CD5 in chronic lymphocytic leukemia/smalllymphocytic lymphoma (CLL/SLL). Expressed in a large subset of mediastinal large B-cell lymphomas.


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