CD33

  • Tech Only CPT
  • Tech Pro CPT 88342.TC, 88342.26
  • PowerPath Code
  • Schedule Monday - Friday
  • Turn Around Time Within 1-2 business days of receipt
  • Disease State Acute Myeloid Leukemia (AML) / Myeloid Sarcoma, Blastic Plasmacytoid Dendritic Cell Neoplasm, Plasma Cell Myeloma/Neoplasm
  • 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

Identifies myeloid progenitors, monocytes, and macrophages. Acute and chronic myelogenous and monocytic leukemias, as well as acute lymphoblastic leukemias, express CD33. Some cases of multiple myeloma also express CD33.