CLSI have updated EP30 – Characterization and Qualification of Commutable Reference Materials for Laboratory Medicine, 2nd Edition. Updated to align with the current ISO 17511:2020 In vitro diagnostic medical devices — Requirements for establishing metrological traceability of values assigned to calibrators, trueness control materials and human samples and current versions of CLSI EP14 Evaluation of Commutability of Processed Samples, 4th Edition and EP25 Evaluation of Stability of In Vitro Medical Laboratory Test Reagents, 2nd Edition