Relative amount-of-substance (rel.ams.)
Abbreviation |
Rel.ams. | ||
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Definition in words |
Amount-of-substance of component B in system 1 divided by amount-of-substance 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 amount-of-substance 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 |
NPU01699 Pt(U)—57Co-Cobalamin; rel.ams.(57Co-B12 and IF p.o.; U 1 d/intake; proc.) = ? | |
Full result | NPU01699 Patient(Urine)—57Co-Cobalamin; relative amount-of-substance(57Co-B12 and Intrinsic Factor oral administration.; Urine after 1 day/intake; procedure) = 0.35 x one | |
Abbreviated result | NPU01699 Pt(U)—57Co-Cobalamin; rel.ams.(57Co-B12 and IF p.o.; U 1 d/intake; proc.) = 0.35 | |
Written expression | The relative amount-of-substance of 57Co-Cobalamin in Mr. Smith’s urine is [0.35]. 57Co-B12 and IF are oral administrated. The calculation is performed by dividing the amount-of-substance of 57Co-Cobalamin in urine after 1 day with the amount-of-substance of 57Co-Cobalamin at intake. The measurement is performed according to procedure defined by the laboratory. | |
Equation
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Example 2 | ||
Generic abbreviated |
NPU02152 U—Galactose; rel.ams.(U 300 min/administration; proc.) = ? | |
Full result | NPU02152 Urine—Galactose; relative amount-of-substance(Urine 300 min/administration; procedure) = ? | |
Abbreviated result | NPU02152 U—Galactose; rel.ams.(U 300 min/administration; proc.) = ? | |
Written expression | The relative amount-of-substance of Galactose in Mr. Smith’s urine is [0.35]. The calculation is performed by dividing the amount-of-substance of Galactose in urine after 300 min with the amount-of-substance of administrered Galactose. The measurement is performed according to procedure defined by the laboratory. | |
Equation |
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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 amount-of-substance
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Reference |
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Date | Term | Note |
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1996-01-01 | Relative amount-of-substance | Term established |
NPU term identifier |
QU50116 |