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Test Code NKCELL Natural Killer Cells

Performing Laboratory

Quest Diagnostics Nichols Institute, Chantilly VA


Flow Cytometry


Includes: Absolute Lymphocytes and Natural Killer Cells (CD3-CD56+CD16+)

Reference Values


See Report

Test Classification and CPT Coding


Specimen Required

Container/Tube: Lavender (EDTA) tube

Specimen: 5 mL mL whole blood (1 mL min)

Transport Temperature: Room Temperature


 Recommendation: Draw sample shortly before courier pick up so it is received at the lab within 24 hours. Avoid transport just before or during weekends, which can result in preassay delay.

Specimen Stability Room temperature: 72 hours


Used For

Measurement of Natural Killer (NK) Cells is useful in the diagnosis of retinoblastomas, medulloblastomas, astrocytomas, and neuroblastomas.

Computer Interface Code

PDM #  1559166