CLSI EP33 : 2016

Abstract
Committee Membership
Foreword
Chapter 1 - Introduction
Chapter 2 - Process flow chart
Chapter 3 - Selecting Candidate Measurands for
            Use in Delta Checks
Chapter 4 - Selection of Delta Check limits
Chapter 5 - Implementing Delta Checks in the Laboratory
            Information System
Chapter 6 - Defining Appropriate Follow-up Action
            for Delta Check Alerts
Chapter 7 - Evaluating the performance of Delta Checking
            After Implementation
Chapter 8 - Conclusion
Chapter 9 - Supplemental Information
References
Appendix - Example of Delta Check Calculations
The Quality Management System Approach
Related CLSI References Materials

Gives approaches for selecting measurands for which delta checks are useful, establishing delta check limits and rules for comparing them to previous results, establishing delta check alerts in the laboratory information system, investigating specimens with delta check alerts, and evaluating the effectiveness of the laboratory's delta check systems.