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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)
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 freeze. Submit the preferred EDTA tubes at room temperature.
Volumes less than 1 mL should be submitted in a pediatric EDTA tube. Specimen must arrive at the referral laboratory within 72 hours of collection in order to meet sample stability requirements. Specimens are accepted <72 hours post collection.
No other preservatives are acceptable. Specify time of day specimen was collected.
Volumes less than 1 mL should be submitted in a pediatric EDTA tube. Specimen must arrive at the referral laboratory within 72 hours of collection in order to meet sample stability requirements. Specimens are accepted <72 hours post collection.
No other preservatives are acceptable. Specify time of day specimen was collected.
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
