Test Name: FLAER
Methodology: Flow Cytometry
FLAER (fluorescein-labeled proaerolysin) is a bacteria-derived prototoxin which binds directly to the glycophosphatidylinositol (GPI) anchor in the membrane of leukocytes. It is used in the flow cytometric assessment for paroxysmal nocturnal hemoglobinuria (PNH), as a direct measurement of GPI expression on granulocytes and monocytes.
Testing for this antigen is typically performed as a part of the PNH analysis. 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.