Clsi Ep28 -

To implement the principles of EP28, one must understand the statistical tools it promotes. The guideline relies heavily on the concept of "State of the Art" statistical process control (SPC).

Ideally, a laboratory wants a QC design where even a small error triggers a rejection. However, EP28 teaches that this is a trade-off. If you set your limits too tight, you will reject runs that are actually fine (false alarms). If you set them too loose, you will miss significant errors. clsi ep28

CLSI EP28-A3c serves as the definitive, internationally recognized guideline for defining, establishing, and verifying clinical laboratory reference intervals to ensure accurate patient data. The standard outlines robust statistical methods for sample partitioning and outlier management, providing a framework that enhances diagnostic precision and safety. For more details, visit To implement the principles of EP28, one must

In an era of personalized medicine, we obsess over genetic variants. But the baseline—the definition of "normal" for 99% of routine testing—still comes from a well-executed reference interval study. However, EP28 teaches that this is a trade-off