Natural Killer Cell Surface Antigen (CD3-CD56+ Marker Analysis)
Use
Determine levels of natural killer cells in circulation; monitor immune stimulation therapy
Special Instructions
To preserve cellular viability, collect the specimen so it will arrive in the laboratory within 48 hours of collection. Indicate the date and time of venipuncture on the tube(s) and on the test request form.
Limitations
The test is dependent on the viability of the collected specimen. It requires specific collection methods to ensure accurate results, as improper handling or delay in transport may render the specimen unusable. Specimens that have been refrigerated, frozen, clotted, or contaminated will be rejected due to compromised integrity.
Methodology
Cell-based / Cytometry (Flow Cytometry)
Biomarkers
LOINC Codes
- 9728-7
- 8112-5
- 6690-2
- 789-8
- 718-7
- 4544-3
- 787-2
- 785-6
- 786-4
- 788-0
- 777-3
- 770-8
- 736-9
- 5905-5
- 713-8
- 706-2
- 75652-8
- 751-8
- 731-0
- 742-7
- 711-2
- 704-7
- 71695-1
- 53115-2
- 58413-6
- 18314-5
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
Fill tube(s) to capacity.
Minimum Volume
Not provided
Container
Lavender-top (EDTA) tube and yellow-top (ACD-A) or (ACD-B) tube
Collection Instructions
Invert tube 8 to 10 times immediately after collection.
Storage Instructions
Maintain specimen at room temperature.
Causes for Rejection
Hemolysis; specimen refrigerated or frozen; clotted specimen; contaminated specimen
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Yellow-top (ACD-A) or (ACD-B) tube: 2 days Lavender-top (EDTA) tube: 1 day |
| Refrigerated | Unstable |
| Frozen | Unstable |
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