Relative number concentration (rel.num.c.)
Abbreviation |
Rel.num.c. | ||
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Definition in words |
Number concentration of component B in system 1 divided by number 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 number 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
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Generic abbreviated |
NPU21415 Culture(Lymcs; B)—Candida albicans stimulated lymphocytes; rel.num.c.(stim./unstim.; proc.) = ? | |
Full result | NPU21415 Culture(Lymphocytes; Blood)—Candida albicans stimulated lymphocytes; relative number concentration(stimulated/unstimulated; procedure) = 0.12 x one | |
Abbreviated result | NPU21415 Culture(Lymcs; B)—Candida albicans stimulated lymphocytes; rel.num.c.(stim./unstim.; proc.) = 0.12 | |
Written expression | The relative number concentration of Candida albicans stimulated lymphocytes from Mrs. Smith’s blood is [0.12]. The calculation is performed by dividing the number concentration of lymphocytes in Candida albicans stimulated culture with the number concentration of lymphocytes in unstimulated culture. The measurement is performed according to procedure defined by the laboratory. | |
Equation | ||
Example 2 | ||
Generic abbreviated |
NPU21418 Culture(Lymcs; B)—Tetanus toxoid stimulated lymphocytes; rel.num.c.(stim./unstim.; proc.) = ? | |
Full result | NPU21418 Culture(Lymphocytes; Blood)—Tetanus toxoid stimulated lymphocytes; relative number concentration(stimulated/unstimulated; procedure) = 0.45 x one | |
Abbreviated result | NPU21418 Culture(Lymcs; B)—Tetanus toxoid stimulated lymphocytes; rel.num.c.(stim./unstim.; proc.) = 0.45 | |
Written expression | The relative number concentration of Tetanus toxoid stimulated lymphocytes from Mrs. Smith’s blood is [0.45]. The calculation is performed by dividing the number concentration of lymphocytes in Tetanus toxoid stimulated culture with the number concentration of lymphocytes in unstimulated culture. The measurement is performed according to procedure defined by the laboratory. | |
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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Relative number concentration
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Reference |
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Date | Term | Note |
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1996-01-01 | Relative number concentration | Term established |
NPU term identifier |
QU50004 |