Coefficient of Variation Ratio (CVR)

The coefficient of variation ratio compares your laboratory precision for a specific test to the CVR of other laboratories performing the same test. Use the following formula to calculate the CVR:

In UnityWeb™, the CVR appears on the following Unity™ Interlaboratory Reports:

• Laboratory Comparison Reports
• Monthly Evaluation Reports
• Affiliated Laboratory Comparison Report: Abbreviated Summary
  This report includes the CVR based on your affiliated group as well as the CVR for the Peer and Method consensus groups.