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T and B Cells, Total
Test CodeQTBCELLST
Quest Code
39588
CPT Codes
86355, 86359
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 - volumes below 1 mL should be submitted in a pediatric EDTA tube
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.
Note: 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. 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.
Note: It is recommended that the sample be drawn shortly before courier pick up and be received within 24 hours.
Transport Container
5 mL (or 3 mL pediatric) EDTA (lavender-top) tube
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?)
Whole blood collected in an ACD (yellow-top) tube or sodium heparin (green-top) tube
Methodology
Flow Cytometry (FC)
Setup Schedule
Mon-sat
Report Available
3 days
Reference Range
See Laboratory Report
Clinical Significance
Low numbers of NK cells are found in individuals who are susceptible to viral infections, including cytomegalovirus and varicella
Performing Laboratory
| Quest Diagnostics Nichols Institute-Chantilly VA |
| 14225 Newbrook Drive |
| Chantilly, VA 20151-2228 |
