Arbitrary time of component B in system 1 compared with arbitrary time of component B in a reference system.

Note 1: Component B can be a reaction or proces

Note 2: The reference system is defined by the laboratory

• Value set is ranked accoding to magnitude
• The value set and the limit of the value set are defined by the laboratory
• The value set can be either numerical values or words.

Example 1

Value set={none<some<high<very high}

Example 2

Value set={low<normal<high}

Example 3

Value set={0<1<2}

Example 4

Value set={negative<positive}

Example 5

Value set={+<++<+++}

• Algebraic operations are not allowed (Ref. 2, 1.26)
• Possible comparison of values (a<b, a=b or a>b)

“Procedure” is stated in the specification to the kind-of-property in the NPU definition

“Procedure” indicates that the measurement procedure must be stated somewhere else than the NPU code and there may be difficulties in comparing values for the same NPU code

Ferard G, Dybkaer R, Fuentes-Arderiu X. Compendium of Terminology and Nomenclature of Properties in Clinical Laboratory Sciences : Recommendations 2016. 1 ed: Royal Society of Chemistry; 2016. 182 p. doi:10.1039/9781782622451