Statistical Quality Control and Method Validation/Verification (QCMV2) e-Learning

Purpose

Laboratories must select appropriate QC rules based on the quality required for a test and the method’s observed accuracy and precision.  In this activity, participants are introduced to the Sigma-metrics QC Selection Tool, available at Westgard.com.  Using a case scenario, participants will select appropriate QC rules and design a QC strategy for a workstation.

Key Message

• The measurement procedure’s quality requirement and the accuracy and precision must be considered in the selection of appropriate QC rules.
• The control rule selected should alert the laboratorian to a significant change before wrong results are reported.
• Selected control rules should maximize the error detection (P_ed ≥ 90%) and minimize the false rejection (P_fr ≤ 5%) while using the lowest number of control measurements possible.

Self Assessment

Can you: 

• Select appropriate QC rules using the Sigma-metrics QC Selection Tool from the Westgard internet site?
• Select a TE_A% using the Westgard internet site?
• Design an effective QC strategy for a workstation?