ISO 17025 Testing Laboratory Checklist

An ISO 17025 testing laboratory checklist is used to assess a testing laboratory against ISO/IEC 17025:2017. It keeps the general requirements in view but focuses on the parts of the standard that determine a testing laboratory's competence: method selection and validation, sampling, the handling of test items, technical records, ensuring the validity of results, and reporting. Its purpose is to confirm the laboratory produces valid test results and reports them correctly. It is distinct from a calibration-focused checklist.

Working through testing scope and competence, test methods and validation, sampling, handling of test items, technical records and validity of results, and reporting, the checklist records conformity and evidence for each area. Because methods, sampling plans and validation depend on the tests the laboratory performs, the checklist covers these topics and lets you record what applies rather than assuming a fixed method or criterion.

A general checklist can pass a testing laboratory while missing the things that make a test result valid: a method used outside its validated scope, sampling that is not representative, test items whose integrity was not protected, or results reported without the information needed to interpret them. The weakness surfaces when a result is challenged or an assessor examines the method and records.

An ISO 17025 testing laboratory checklist fixes that by assessing method validation, sampling, handling of items, records, validity of results and reporting directly, alongside the general requirements. The laboratory can confirm its test results are valid and properly reported, and correct any gap before it affects a result or an assessment.