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T and B Cells, Total
Test Code39588
Includes
Absolute Lymphocytes, Absolute CD19+ Cells, % CD19 (B Cells), Absolute CD3+ Cells, % CD3 (Mature T Cells)
Preferred Specimen
5 mL whole blood collected in an EDTA (lavender-top) tube
Minimum Volume
0.5 mL
Instructions
Do not transfer whole blood to M4 preservative.
Volumes less than 1 mL should be submitted in a pediatric EDTA tube. Submit the EDTA tube(s) at room temperature. Do not refrigerate or freeze.
It is recommended that the sample be drawn shortly before courier pick up and be received within 24 hours.
Volumes less than 1 mL should be submitted in a pediatric EDTA tube. Submit the EDTA tube(s) at room temperature. Do not refrigerate or freeze.
It is recommended that the sample be drawn shortly before courier pick up and be received within 24 hours.
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 72 hours
Refrigerated: Unacceptable
Frozen: Unacceptable
Refrigerated: Unacceptable
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
ACD (yellow-top) tube • Sodium heparin (green-top) tube
Methodology
Flow Cytometry (FC)
Setup Schedule
Set up: Daily; Report available: 2-3 days
Clinical Significance
Low numbers of NK cells are found in individuals who are susceptible to viral infections, including cytomegalovirus and varicella
