Natural Killer Cell Activity
NK cell Functional
Natural Killer Cell Functional Assay
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Natural Killer (NK) cells, a component of the cell-mediated arm of the immune system, mediate destruction of some types of tumor cells and virus-infected cells. Decreased NK cytotoxicity is associated with impaired immune surveillance, and may explain a predisposition to malignancy and viral infections. Increased NK cytotoxicity has been observed in women with a history of spontaneous abortions.
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Specimen must be collected between 12 noon and 4pm to arrive in Cincinnati within stability. Collect sufficient specimens in green top tubes. Send intact whole blood at room temperature. Do not refrigerate or freeze. Specimens are accepted by MLabs Monday through Thursday between 12:00 noon and 4:00 pm only and must be received by performing laboratory within 24 hours of collection.