Substance content (subst.cont.) - Dynamic NPU Manual

Substance content (subst.cont.)

by | Feb 4, 2020 | List of kinds-of-property, Kind-of-quantity

Substance content (subst.cont.)

Abbreviation

 Subst.cont.

Definition in words

 Amount-of-substance of component B divided by mass of system 1

Definition by equation

Systematic terms

 Substance content 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

 fmol/kg, pmol/kg, nmol/kg, μmol/kg, mmol/kg, mol/kg, etc.

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. doi:10.1039/9781782622451.

Laboratory field

Examples

Clinical Chemistry

 

 Example 1
Generic abbreviated
 NPU18145 F—Coproporphyrin I; subst.cont. = ? µmol/kg
Full esult NPU18145 Faeces—Coproporphyrin I; substance content = 324 micromol per kilogram
Abbreviated result NPU18145 F—Coproporphyrin I; subst.cont. = 324 µmol/kg
Written expression The substance content of Coproporphyrin I in Mr. Smith’s faeces is [324] µmol/kg.
Equation

Clinical Pharmacology

 Example 2
Generic abbreviated
 NPU29265 DNA(spec.)—Thioguanine; subst.cont. = ? µmol/kg
Full result NPU29265 DNA(specification)—Thioguanine; substance content = 17.2 micromol per kilogram
Abbreviated result NPU29265 DNA(spec.)—Thioguanine; subst.cont. = 17.2 µmol/kg
Written expression The substance content of Thioguanine in DNA from Mr. Smith’s blood is [17.2] µmol/kg.
Equation

  The laboratory has specified that the DNA derives from blood.

Clinical Toxicology
Example 3
Generic abbreviated
 NPU02700 Hair—Mercury; subst.cont. = ? µmol/kg
Full result NPU02700 Hair—Mercury; substance content = 4.99 micromol per kilogram
Abbreviated result NPU02700 Hair—Mercury; subst.cont. = 4.99 µmol/kg
Written expression The substance content of Mercury in Mr. Smith’s hair is [4.99] µmol/kg.
Equation

Molecular Biology and Genetics

 Example 4
Generic abbreviated
 NPU17790 Placenta—Copper; subst.cont. = ? µmol/kg
Full result NPU17790 Placenta—Copper; substance content = 15 micromol per kilogram
Abbreviated result NPU17790 Placenta—Copper; subst.cont. = 15 µmol/kg
Written expression The substance content of Copper in Mrs. Smith’s placenta is [15] µmol/kg.
Equation

Reference

 NPU database, https://www.ifcc.org/ifcc-scientific-division/sd-committees/c-npu/npusearch/ and http://www.labterm.dk/default.aspx

 

  • Kind-of-property

    • Nominal kind-of-property

    • Kind-of-quantity

      • Unitary kind-of-quantity

        • Rational unitary kind-of-quantity

          • Substance content

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 content Term established

NPU term identifier

 QU50009