Substance ratio increment (subst.ratio incr.) - Dynamic NPU Manual

Substance ratio increment (subst.ratio incr.)

by | Jan 31, 2020 | List of kinds-of-property, Kind-of-quantity

Substance ratio increment (subst.ratio incr.)

Abbreviation

 Subst.ratio incr.

Definition in words

 Increase of substance ratio of component B in system 1

Definition by equation

Systematic terms

 Substance ratio increment of component B in system 1

Result type

 Rational scale
  • Value sets are positive numerical values
  • Algebraic operations are allowed (a=nb; a≠nb)
 Numerical values from 0-∞

Unit

10-6, 10-3, 1 (one), 103, 106, etc.

Unit, one (1) is omitted in the NPU syntax

Reference

 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.

Laboratory field

Examples

Clinical Microbiology

 
 
 Generic abbreviated form NPU14406 P—Helicobacter pylori antibody(IgG); subst.ratio incr.(proc.) = ?
Full form with a result NPU14406 Plasma—Helicobacter pylori antibody(Immunoglobulin G); substance ratio increment(procedure) = 0.2
Abbreviated form with a result NPU14406 P—Helicobacter pylori antibody(IgG); subst.ratio incr.(proc.) = 0.2
Written expression The substance ratio increment of Helicobacter pylori antibody(IgG) of Mr. Smith’s plasma is [0.2]. The measurement is performed according to procedure defined by the laboratory.
Equation

Notes

This is the only NPU code with the use of substance ratio increment. However, the component is uncertain as there is no indication of what ratio it is.

Reference
 NPU database, https://www.ifcc.org/ifcc-scientific-division/sd-committees/c-npu/npusearch/ 

  • Kind-of-property

    • Nominal kind-of-property

    • Kind-of-quantity

      • Unitary kind-of-quantity

        • Rational unitary kind-of-quantity

          • Substance ratio increment

Reference
  • Dybkaer R. Concept system on ‘quantity’: formation and terminology. Accredit Qual Assur. 2013;18(3):253-60.
  • Dybkaer R. ISO terminological analysis of the VIM3 concepts ‘quantity’ and ‘kind-of-quantity’. Metrologia. 2010;47(3):127-34.
Date Term Note
1996-01-01 Substance ratio increment Term established

NPU term identifier

 QU50014
Date Notes

Example
2019-09-05 The results are always positive numeric values.