Test Name: CD34

Methodology: Flow Cytometry

Test Description

Staining for CD34 detects progenitor cells, including stem cells, myeloid blasts and early lymphoid progenitors (“stage I hematogones”). It is also expressed by the blasts of most acute myeloid leukemias and precursor B lymphoblastic lymphoma/leukemia, and by 80-85% of cases of precursor T-lymphoblastic lymphoma/leukemia. Acute monoblastic leukemias lack CD34 expression in a large proportion of cases.

Specimen Requirements

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

Click here to reference the 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.