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HelpTest Code CD57 CD57, CD3, CD8 Flow Cytometry
Additional Codes
19860
Performing Laboratory
Quest Diagnostics
Set up: Mon-Sat; Report available: 3-5 days
Collection Instructions
Preferred Specimen(s): 5 mL whole blood collected in an EDTA (lavender-top) tube
Alternative Specimen(s): 1 mL whole blood collected in a pediatric EDTA (lavender-top) tube
Minimum Volume
3 mL
0.5 mL pediatric
Collection Instructions
Absolute count results provided with this test code require a CBC to be performed. The stability for the CBC is 48 hours. Please provide a CBC collected the same day as the submitted specimen, if it is anticipated the sample will not reach the laboratory within 48 hours
Reference Values
| CD57+/CD3- of % lymphs | 1-10 % |
| CD57+/CD3- of % WBC | 1-4 % |
| CD57+/CD3- absolute | 20-258 cells/uL |
| CD57+/CD3-/CD8- of % lymphs | 1-5 % |
| CD57+/CD3-/CD8- of % WBC | 1-3 % |
| CD57+/CD3-/CD8- absolute | 20-114 cells/uL |
| CD57+/CD8- of % lymphs | 1-15 % |
| CD57+/CD8- of % WBC | 1-4 % |
| CD57+/CD8- absolute | 20-248 cells/uL |
Specimen Stability and Transport
Transport Container
EDTA (lavender-top) tube
Transport Temperature
Room temperature
Specimen Stability
- Room temperature: 72 hours
- Refrigerated: Unacceptable
- Frozen: Unacceptable
Reject Criteria
Gross hemolysis • Received frozen
Methodology
Flow Cytometry
CPT Codes:
86359, 86356 (x2)