Westgard rules are layered on top of a Levey-Jennings control chart to catch random and systematic analytical error in clinical-lab QC. The 1-3s / 2-2s / R-4s / 4-1s / 10x multirule combination is the clinical default.
What each Westgard rule catches, when to use them, false-rejection rates, and how LabFlow ships the multirule combination out of the box.
Open the full LabFlow page in a JavaScript-enabled browser to see the interactive version.