All about how the reference intervals used in the lab are established. Establishing a reference interval vs. verifying or validating one, subject selection, etc.
https://drive.google.com/file/d/1mb4KCBrCv9t83U0xYNaK9nUS1hy056yj/view?usp=sharing
Sources:
Clinical Chemistry: Techniques, Principles, Correlations. Michael L. Bishop, et. al.; 8th ed.
Linné and Ringsrud’s Clinical Laboratory Science: The Basics and Routine Techniques. 6th Edition. Mary Louise Turgeon