Number of entities (num.)
Synonym |
Absolute frequency, number of particles, number of molecules | ||
---|---|---|---|
Abbreviation |
Num. | ||
Definition in words |
Number of entities (component B) in system 1 Note 1: Number of entities is not a SI base kind-of-quantity. In clinical laboratory, it is considered as a base kind-of-quantity. Note 2: Entities are things with distinct and independent existence Note 3: Entities can be distributed into a category due to their common distinct characteristics |
||
Definition by equation |
|||
Systematic terms
|
Number of component B in system 1 | ||
Result type |
Rational scale |
|
Numerical values from 0-∞ |
Unit |
1 (one), 103, 106, 109, 1012, 1015, 1018 etc. Unit, one (1) is omitted in the NPU syntax |
||
Non-recommended term |
Count | ||
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. |
Laboratory field |
Examples |
|
---|---|---|
Clinical Chemistry |
Example 1 | |
Generic abbreviated |
NPU03843 U—Erythrocytes; num.(proc.) = ? × 106 | |
Full result | NPU03843 Urine—Erythrocytes; number of entities(procedure) = 0.5 × 106 | |
Abbreviated result | NPU03843 U—Erythrocytes; num.(proc.) = 0.5 × 106 | |
Written expression | The number of Erythrocytes in Mrs. Smith’s urine is 0.5 × 106. The measurement is performed according to a procedure defined by the laboratory. | |
Equation |
|
|
Reproduction and Fertility |
Example 2 | |
Generic abbreviated |
NPU03454 Sem—Spermatozoa; num.(proc.) = ? × 106 | |
Full result | NPU03454 Semen—Spermatozoa; number of entities(procedure) = 150 × 106 | |
Abbreviated result | NPU03454 Sem—Spermatozoa; num.(proc.) = 150 × 106 | |
Written expression | The number of Spermatozoa in Mr. Smith’s Semen is 150 × 106. The measurement is performed according to a procedure defined by the laboratory. | |
Equation |
|
|
Example 3 | ||
Generic abbreviated |
NPU57215 Sem—Spermatozoa; num.(proc.) = ? × 109 | |
Full result | NPU57215 Semen—Spermatozoa; number of entities(procedure) = 0.12 × 109 | |
Abbreviated result | NPU57215 Sem—Spermatozoa; num.(proc.) = 0.12 × 109 | |
Written expression | The number of Spermatozoa in Mr. Smith’s Semen is 0.12 × 109. The measurement is performed according to a 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 |
-
Kind-of-property
-
Nominal kind-of-property
-
Kind-of-quantity
-
Unitary kind-of-quantity
-
Rational unitary kind-of-quantity
-
Number of entities
-
-
-
-
Reference |
|
Date | Term | Note |
---|---|---|
2019-06-06 | Number of entities | Term established |
NPU term identifier |
QU50040 |