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CLSI EP39-Ed 1 (R2025)
A Hierarchical Approach to Selecting Surrogate Samples for the Evaluation of In Vitro Medical Laboratory Tests - 1st Edition (Includes guide 3/2026)
This guideline establishes a definition of a surrogate sample, provides recommendations for determining when to use surrogate samples, and describes a process for selecting the most appropriate surrogate sample.
Clinical And Laboratory Standards Institute [clsi]