Test Name: CD57
Methodology: Flow Cytometry
Staining for CD57 detects a subset of CD8+ T-cells, T-large granular lymphocytes. It is used more often in the detection and quantitation of the latter cells in normal samples and T-large granular lymphocyte proliferations. CD57 may also be expressed by precursor T- and some precursor B-lymphoblastic lymphoma/leukemia cases.
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.