Accrediting bodies love CLSI EP28 because it is black-and-white. Here are the top reasons labs get cited for non-compliance.
“That’s too narrow,” her senior technologist, Marcus, said, frowning at the scatter plot. “Manufacturer says 0.4 to 4.0. If we use ours, we’ll flag half our outpatients as abnormal.” 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). Accrediting bodies love CLSI EP28 because it is
Mrs. Eleanor Park, 68, came in for fatigue. Her TSH was 3.9 mIU/L—within the manufacturer’s range but above Aliyah’s verified upper limit of 3.2. Using the lab’s new narrow interval, the computer flagged it as Abnormal-High . The junior resident started her on low-dose levothyroxine. “Manufacturer says 0