Test guide

Natural Killer Cell to Total Blood Cell Percent Measurement

The measurement of the ratio of natural killer cells, which are leukocytes that express CD16 and CD56, to the total number of blood cells in a sample expressed as a percent value.

For professionalsReviewed 2026-10-20

What it is for

Source: National Cancer Institute, NCI Thesaurus 26.09d, C201191. Unmodified NCI definition, CC BY 4.0. Source identity and classification checked automatically on 2026-10-20.

Limitations

Terminology reference for a laboratory procedure. The source definition does not establish routine clinical availability, validated specimen types, reference intervals, product authorization or suitability for an individual. Consult the performing laboratory for its validated method and interpretation.

Also known as

  • CD16 and CD56 Positive Natural Killer Cell to Total Blood Cell Percent Measurement
  • CD16 and CD56 Positive NK Cell to Total Blood Cell Percent Measurement
  • Natural Killer Cell to Total Blood Cell Percent Measurement
  • NK Cell to Total Blood Cell Percent Measurement

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