Natural Killer Cell (CD16 + CD56), Flow Cytometry


Natural Killer (NK) cells morphologically appear as so-called “large granular lymphocytes.” Natural killer cells usually lack expression of CD3, but mark positively for CD16, CD56. The natural killer cell population may be increased or decreased in various immunologic abnormalities and recurrent abortions.


NK cell proliferation occurs in a number of reactive and autoimmune conditions. In addition, increased NK cell counts have been implicated in some cases of female infertility and abortion.

Sample Type, Quantity & Conditions

3 ml EDTA Whole Blood Room Temperature

Special Precautions

Transport samples at room temperature.

Normal Range

By Report

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