08028 IUPAC Gold Book - measurement procedure 10.1351/goldbook.08028 08028 current 1 Detailed description of a measurement according to one or more measurement principles and to a given measurement method, based on a measurement model and including any calculation to obtain a measurement result. A measurement procedure is usually documented in sufficient detail to enable an operator to perform a measurement. A measurement procedure can include a statement concerning a target measurement uncertainty. Measurement procedures in chemistry can be structured according to ISO 78-2 or Annex A of the Eurachem Guide "The Fitness for Purpose of Analytical Methods". An authorized measurement procedure is sometimes termed "standard operating procedure" (SOP) or "recommended operating procedure" (ROP). In ISO/IEC 17025, the term "method" is used for measurement procedure. "Examination procedure" is defined for medical laboratories. The historical term "assay" is now largely obsolete as a synonym for metrological terms such as measurement procedure but still used in composite terms, for example, immunoassay and bioassay. standard operating procedure https://goldbook.iupac.org//terms/view/08131 target measurement uncertainty https://goldbook.iupac.org//terms/view/08133 PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1011 (https://doi.org/10.1515/pac-2019-0819) https://goldbook.iupac.org/terms/view/08028/html https://goldbook.iupac.org/terms/view/08028/json https://goldbook.iupac.org/terms/view/08028/plain Citation: 'measurement procedure' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08028 The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. 2026-05-30T10:26:11+00:00