Sigma Metrics Across the Total Testing Process.

  title={Sigma Metrics Across the Total Testing Process.},
  author={Navapun Charuruks},
  journal={Clinics in laboratory medicine},
  volume={37 1},
Laboratory quality control has been developed for several decades to ensure patients' safety, from a statistical quality control focus on the analytical phase to total laboratory processes. The sigma concept provides a convenient way to quantify the number of errors in extra-analytical and analytical phases through the defect per million and sigma metric equation. Participation in a sigma verification program can be a convenient way to monitor analytical performance continuous quality… CONTINUE READING
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