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In our recent scouring of the scientific literature, we found more than 200 papers, written by more than 400 authors, published in more than 90 scientific journals, that discuss the Sigma-metric approach or demonstrate its implementation. If you seeking more examples and discussion of Sigma-metrics, this is a great place to start.
Westgard QC is proud to announce the publication of the latest edition of Dr. Sharon S. Ehrmeyer's book, The Poor Lab's Guide to the Regulations.
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We've talked about Westgard Rules for decades, and we've talked about Six Sigma for years. So what happens when we try to talk about both at the same time? Westgard Sigma Rules
Standarization or Standarisation? Harmonization or Harmonisation? We seem to be headed toward a schism in performance specifications, rather than a consensus. Here's a current comparison of Global Performance Specifications for Chemistry Assays.
May 6th 2024 will forever be etched into the history of regulation. It's the date that the FDA issued its Final Rule on Laboratory-Developed Tests (LDTs). This is the introduction to this momentous, some might say monstrous, occurrence.
Funny thing about measurement uncertainty - it's not always clear how to calculate it. Particularly when clinically significant bias exists.
About this website
For over 25 years, WESTGARD QC has provided the latest news, education, and tools in the quality control field. Our goal is to bring tools, technology and training into today's healthcare industry — by featuring QC lessons, QC case studies and frequent essays from leaders in the quality control area. This is also a reference source for quality requirements, including CLIA requirements for analytical quality. This website features the best explanation of the Multirule ("Westgard Rules") and how to use them. For laboratory and healthcare professionals looking for educational and reference material in the quality control field.
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