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Paroxysmal Nocturnal Hemoglobinuria (PNH) with FLAER (High Sensitivity), NY
Test Code38687
CPT Codes
88184, 88185 (x7), 88187<br><strong>This test code is for New York patient testing. For non-New York patient testing, use test code 94148.</strong>
Includes
Antibodies directed against CD45, glycophorin A, CD59, CD24, CD14, CD15, CD64, as well as FLAER.
Preferred Specimen
5 mL whole blood collected in a sodium heparin (green-top) tube
Minimum Volume
3 mL
Other Acceptable Specimens
Whole blood collected in: ACD-A (yellow-top) tube or EDTA (lavender-top) tube
Transport Temperature
Room temperature
Specimen Stability
Sodium heparin and ACD
Room temperature: 48 hours
Refrigerated: Unacceptable
Frozen: Unacceptable
EDTA
Room temperature: 30 hours
Refrigerated: Unacceptable
Frozen: Unacceptable
Room temperature: 48 hours
Refrigerated: Unacceptable
Frozen: Unacceptable
EDTA
Room temperature: 30 hours
Refrigerated: Unacceptable
Frozen: Unacceptable
Methodology
Flow Cytometry (FC)
Setup Schedule
Set up: Daily; Report available: 2-3 days
Reference Range
See Laboratory Report
Clinical Significance
The high sensitivity and quantitative flow cytometry assay is used in the diagnosis and follow-up of patients with paroxysmal nocturnal hemoglobinuria (PNH). FLAER as well as antibodies directed against glycophosphatidylinositol (GPI)-linked antigens are used to evaluate for the presence of (GPI)-deficient cell populations down to a level of 0.01%.