Westgard rules

West·gard rules

(west'gahrd rūlz)
A quality control protocol that allows detection of random and systematic error. The protocol includes the 12-s, 13-s, 22-s, R-4s, 4-1s, and 10 ×rules.
References in periodicals archive ?
Usually, this is done in conjunction with what's called the Westgard Rules, which are a convention that an instrument run and all its results should be scrutinized if any one control exceeds 2s from the mean (known as a 1(2s) violation).
Applications of control charts in the molecular lab
On applying Westgard rules on the internal quality control data of protein all runs were acceptable at both control levels.
Estimation of uncertainty measurement - A prerequisite of ISO1589 accreditation for clinical laboratories
11 built-in quality control program - the possibility of graphical representations of control, the possibility of Westgard rules
Supply of laboratory reagents
Sophisticated user-definable display of QC results should include Levey-Jennings plots and interactive display of violations of user-selected rules, such as Westgard rules.
The ideal laboratory information system
Mention is made of Levey-Jennings charts and Westgard Rules but there is really no mention of how to use these tools in the context of day-to-day blood gas laboratory operation.
Clinical blood gases: Assessment & Intervention, 2nd edition
Quality control using Westgard rules of graphical presentation and statistical evaluation of audit results.
lease hematology analyzer for the determination and the supply of reagents and consumables
Westgard rules and Levey-Jennings charts are the statistical tools typically used by clinical labs.
QA: Quality Control and blood glucose analysis
And learn to treat the Westgard rules like the castle moat.
The Levey-Jennings Plot
An L-J chart and the Westgard Rules are frequently used to verify trends, biases, or errors in quality controls.
Quality control in clinical laboratory samples
A standard guide for the application of Westgard Rules, for example, has been updated to reflect quality controls for genetic testing (Basic QC Practices, 3rd ed.
Growth, complexity of molecular testing drive need for quality controls
Few people recognize that the multirule QC procedure known as Westgard Rules (3) was the outcome of a similar simulation study (4).
Use and interpretation of common statistical tests in method comparison studies
When used routinely with traditional tools such as Levey-Jennings charts and Westgard Rules, the laboratory is alerted to test system errors so corrective action can be performed before system failures occur.
Cystic fibrosis control panel
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