Substance fraction (subst.fr.)
Substance fraction |
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Synonyms |
Mole fraction, amount-of-substance fraction | ||
Abbreviation |
Subst.fr. | ||
Definition in words |
Amount-of-substance of component B divided by amount-of-substance of system 1 | ||
Definition by equation |
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Systematic terms
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Substance fraction of component B in system 1 | ||
Result type |
Rational scale |
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Numerical values from 0-∞ |
Unit |
10-18, 10-15, 10-12, 10-9, 10-6, 10-3, 1 (one), etc. Unit, one (1) is omitted in the NPU syntax |
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Non-recommended term |
Amount fraction, number fraction | ||
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 |
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Clinical Chemistry |
Example 1 | |
Generic abbreviated |
NPU27300 Haemoglobin beta chain(B)—N-(1-deoxyfructos-1-yl)haemoglobin beta chain; subst.fr. = ? mmol/mol | |
Abbreviated result | NPU27300 Haemoglobin beta chain(Blood)—N-(1-deoxyfructos-1-yl)haemoglobin beta chain; substance fraction = 48 millimol per mol | |
Full result | NPU27300 Haemoglobin beta chain(B)—N-(1-deoxyfructos-1-yl)haemoglobin beta chain; subst.fr. = 48 mmol/mol | |
Written expression | The substance fraction of N-(1-deoxyfructos-1-yl)haemoglobin beta chain of all Haemoglobin beta chain in Mr. Smith’s blood is [48] mmol/mol. | |
Equation
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Notes
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Trivial name for this measurement description is HbA1c Generally, for any fraction or ratio the units are numerical values, however, due to IFCC recommendations, “mmol/mol” was selected as unit for this measurement only. Nordin, International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) IFCC Scientific Division, Committee on Nomenclature, Properties and Units (C-NPU): Gunnar and René Dybkær. 2007. Recommendation for term and measurement unit for “HbA1c”. Clinical Chemical Laboratory Medicine. 45(8): 1081-1082. Retrieved 30 Aug. 2019, from doi:10.1515/CCLM.2007.245 |
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Clinical Microbiology |
Example 2 | |
Generic abbreviated |
NPU54252 Rubellavirus antibody(P; IgM)—Rubellavirus antibody(IgM; high avidity); subst.fr.(proc.) = ? | |
Full result | NPU54252 Rubellavirus antibody(Plasma; Immunoglobulin M)—Rubellavirus antibody(Immunoglobulin M; high avidity); substance fraction(procedure) = 0.3 x one | |
Abbreviated result | NPU54252 Rubellavirus antibody(P; IgM)—Rubellavirus antibody(IgM; high avidity); subst.fr.(proc.) = 0.3 | |
Written expression | The substance fraction of Rubellavirus-antibody (IgM) with high avidity of all Rubellavirus-antibody (IgM) in Mr. Smith’s plasma is [0.3].The measurement is performed according to a procedure defined by the laboratory. | |
Equation |
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Molecular Biology and Genetics
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Example 3
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Generic abbreviated |
NPU54270 JAK2 gene(DNA; Marrow)—JAK2 gene(LRG_612: g.93526G>T); subst.fr. = ? | |
Full result | NPU54270 JAK2 gene(DNA; Marrow)—JAK2 gene(LRG_612: g.93526G>T); substance fraction(procedure) = 0.7 x one | |
Abbreviated result | NPU54270 JAK2 gene(DNA; Marrow)—JAK2 gene(LRG_612: g.93526G>T); subst.fr. = 0.7 | |
Written expression | The substance fraction of the variant, LRG_612: g.93526G>T in the JAK2 gene, of all JAK2 gene (DNA) in Mr. Smith’s marrow is [0.7]. | |
Equation | ||
Thrombosis and Haemostasis |
Example 4 | |
Generic abbreviated |
NPU28671 Von Willebrand factor(P)—Von Willebrand factor(vWA1); subst.fr. = ? | |
Full result | NPU28671 Von Willebrand factor(Plasma)—Von Willebrand factor(vWA1); substance fraction = 0.05 x one | |
Abbreviated result | NPU28671 Von Willebrand factor(P)—Von Willebrand factor(vWA1); subst.fr. = 0.05 | |
Written expression | The substance fraction of Von Willebrand factor(vWA1) of all Von Willebrand factor in Mr. Smith’s plasma is [0.05]. | |
Equation | ||
Reference |
NPU database, https://www.ifcc.org/ifcc-scientific-division/sd-committees/c-npu/npusearch/ and http://www.labterm.dk/default.aspx |
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Kind-of-property
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Nominal kind-of-property
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Kind-of-quantity
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Unitary kind-of-quantity
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Rational unitary kind-of-quantity
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Substance fraction
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Reference |
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Date | Term | Note |
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1996-01-01 | Substance fraction | Term established |
NPU term identifier |
QU50010 |