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34184: Natural Killer Cells, Functional Print View
NK Cells, Functional FC    LU30 

PRIMARY
1 Whole Blood Heparin 10 (5) mL   Room Temperature - 48 Hour(s)  
ALTERNATE

Natural killer cells (NK cells) are a subset of non-B, non-T peripheral blood lymphocytes that appear to play a crucial role in the human innate immune response. The function of NK cells is important for the clearance of tumor cells, for the removal of immunoglobin-bound antigens, and for the control of viral infections. NK function has been reported to be decreased in certain individuals, including those with primary immunodeficiencies, those with late- stage human immunodeficiency virus infections, and pregnant women.

Specimen must be received in the testing lab within 48 hours of
collection. Submit Monday through Thursday only.

Maintain and transport blood at room temperature. Avoid
temperatures <15 degrees C and >37 degrees C. In hot weather,
it may be necessary to pack the specimen in a container with
insulating material around it and place this container inside
another that contains a cold pack (ice pack) and absorbent
material. This method will help retain the specimen at ambient
temperature.

For longitudinal studies, draw specimens at the same time of
day to minimize diurnal variation.

Normal diet, fasting preferred to avoid lipemia.
Setup Schedule
Tuesday-Friday

Reported (Analytical Time)
Next day

CPT Codes
88185x2,88184

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
Reject Criteria: Hemolysis; received frozen; clotted specimens; expired (>48 hours) Transport Temperature: Room temperature






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