national examination standard

https://doi.org/10.1351/goldbook.10025

Examination standard recognized by national authority to serve in a state or economy as the basis for assigning nominal property values to other examination standards for the same kind-of-nominal-property.

Example: The examinand "HLA specific allo-antibodies in human blood plasma" is detected and identified according to a nationally agreed examination procedure and nominal reference material.

Source:
PAC, 2018, 90, 913. 'Vocabulary on nominal property, examination, and related concepts for clinical laboratory sciences (IFCC-IUPAC Recommendations 2017)' on page 930 (https://doi.org/10.1515/pac-2011-0613)