What's Popular
What's Popular
- "Westgard Rules" and Multirules
- Desirable Biological Variation Database specifications
- 2025 CLIA Acceptance Limits for Proficiency Testing
- QC: The Levey-Jennings Control Chart
- CLIA Requirements for Analytical Quality 1992
- Z-4: Mean, Standard Deviation, And Coefficient Of Variation
- QC - The Calculations
- Z-5: Sum of Squares, Variance, and the Standard Error of the Mean
- Consolidated Comparison of Chemistry Performance Specifications
- Probit Analysis, Part One
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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