Test Name: HLA-DR
Methodology: Flow Cytometry
Staining for HLA-DR highlights normal mature B-cells, activated T-cells, monocytes/macrophages, dendritic cells and CD34+ blasts. Additionally, it is expressed on the leukemic cells of acute myeloid leukemias (with the notable exception of acute promyelocytic leukemia), lymphoblastic and mixed lineage leukemia, and by neoplastic lymphoid cells in mature B-cell and T-cell lymphomas.
Testing for this antigen is typically performed as a part of the leukemia/lymphoma screening panel. For customized testing panels including this antigen, please contact the Medical Director of the Flow Cytometry laboratory.
Storage and Transport
Maintain specimen at room temperature. Do not refrigerate or freeze. Use cold pack for transport, making sure cold pack is not in direct contact with specimen.
Specimen Rejection Criteria
Turn Around Time (TAT): 24 hours
CPT Codes*: 88184, 88185, 88187, 88188, 88189
*The CPT codes provided with our Test Descriptions are based on AMA guidelines and are for informational purposes only. Correct CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed.