SEARCH Articles Figures Tables Best Practices in Evaluating Novel Biomarker Fit for Purpose and Translatability Best Practices in Novel Biomarker Assay Fit-for-Purpose Testing Fit for intended purpose Fit for purpose validation Fit for the purpose Fit-for-purpose assay Fitness for Purpose and Managing Uncertainty Fitness for intended purpose Fitness for purpose Fitness for purpose Fitness for purpose validation Principle 2 Analytical Measurements Should Be Made Using Methods and Equipment That Have Been Tested to Ensure They Are Fit for Purpose