Relative substance concentration (rel.subst.c.)
Abbreviation |
Rel.subst.c. | ||
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Definition in words |
Substance concentration of component B in system 1 divided by substance concentration of component B in system 2 Note: System 1 is not related to system 2 |
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Definition by equation
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Systematic terms
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Relative substance concentration of component B in system 1 | ||
Result type |
Rational scale |
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Numerical values from 0-∞ |
Unit |
10-6, 10-3, 1 (one), 103, 106, etc. The unit “1” (one) is ommited in the NPU syntax. |
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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 |
NPU01523 Csf—Glucose; rel.subst.c.(Csf/P) = ? | |
Full result | NPU01523 Cerebrospinal fluid—Glucose; relative substance concentration(Cerebrospinal fluid/Plasma) = 0.60 x one | |
Abbreviated result | NPU01523 Csf—Glucose; rel.subst.c.(Csf/P) = 0.6 | |
Written expression | The relative substance concentration of Glucose in Mr. Smith’s Cerebrospinal fluid is [0.60]. The calculation is performed by dividing substance concentration of Glucose in Mr. Smith’s Cerebrospinal fluid with the substance concentration of Glucose in Mr. Smith’s plasma. | |
Equation
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Clinical Immunology and Biobanking
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Example 2 | |
Generic abbreviated |
NPU26790 P—Complement C1 esterase inhibitor(active); rel.subst.c.(actual/norm; proc.) = ? | |
Full result | NPU26790 Plasma—Complement C1 esterase inhibitor(active); relative substance concentration(actual/norm; procedure) = 1.6 x one | |
Abbreviated result | NPU26790 P—Complement C1 esterase inhibitor(active); rel.subst.c.(actual/norm; proc.) = 1.6 | |
Written expression | The relative substance concentration of Complement C1 esterase inhibitor(active) in Mr. Smith’s Plasma is [1.6]. The calculation is performed by dividing substance concentration of Complement C1 esterase inhibitor(active) in Mr. Smith’s plasma (actual) with the substance concentration of Complement C1 esterase inhibitor(active) in a norm (reference system). | |
Equation |
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Notes |
“Actual” refers to the Mr. Smith’s result. “Norm” is a reference system that is defined by the laboratory. |
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Clinical Microbiology |
Example 3
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Generic abbreviated |
NPU12323 Csf—Borrelia burgdorferi antibody(IgG); rel.subst.c.(Csf/P) = ? | |
Full result | NPU12323 Cerebrospinal fluid—Borrelia burgdorferi antibody(Immunoglobulin G); relative substance concentration(Cerebrospinal fluid/Plasma) = 0 x one | |
Abbreviated result | NPU12323 Csf—Borrelia burgdorferi antibody(IgG); rel.subst.c.(Csf/P) = 0 | |
Written expression | The relative substance concentration of Borrelia burgdorferi antibody(IgG) in Mr. Smith’s Cerebrospinal fluid is [0]. The calculation is performed by dividing substance concentration of Borrelia burgdorferi antibody(IgG) in Mr. Smith’s plasma with the substance concentration of Borrelia burgdorferi antibody(IgG) in Mr. Smith’s plasma. | |
Equation | ||
Thrombosis and Haemostasis |
Example 4 | |
Generic abbreviated |
NPU18918 P—Von Willebrand factor; rel.subst.c.(imm.; actual/norm; proc.) = ? | |
Full result | NPU18918 Plasma—Von Willebrand factor; relative substance concentration(immunology; actual/norm; procedure) = 0.79 x one | |
Abbreviated result | NPU18918 P—Von Willebrand factor; rel.subst.c.(imm.; actual/norm; proc.) = 0.79 | |
Written expression | The relative substance concentration of Von Willebrand factor in Mr. Smith’s Plasma is [0.79]. The calculation is performed by dividing substance concentration of Von Willebrand factor in Mr. Smith’s plasma (actual) with the substance concentration of Von Willebrand factor in a norm (reference system). | |
Equation | ||
Notes |
“Actual” refers to the Mr. Smith’s result. “Norm” is a reference system that is defined by the laboratory. |
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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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Relative substance concentration
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Reference |
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Date | Term | Note |
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1996-01-01 | Relative substance concentration | Term established |
NPU term identifier |
QU50005 |