Mass concentration (mass c.) - Dynamic NPU Manual
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# Mass concentration (mass c.)

Mass c.

### Definition in words

The mass of component B divided by volume of system 1

### Systematic terms

Mass concentration of component B in system 1

### Result type

Rational scale
• Value sets are positive numerical values
• Algebraic operations are allowed (a=nb; a≠nb)
Numerical values from 0-∞

### Unit

mg/L, g/L, kg/L etc.

### 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.

### Allergology

Example 1
Generic abbreviated
NPU29790 P—Pigeon serum protein antibody(IgG); mass c.(e93) = ? mg/L
Full result NPU29790 P—Pigeon serum protein antibody(IgG); mass c.(e93) = 0.8 milligram per litre
Abbreviated result NPU29790 P—Pigeon serum protein antibody(IgG); mass c.(e93) = 0.8 mg/L
Written expression The mass concentration of Pigeon serum protein antibody(IgG) in Mr. Smith’s plasma is [0.8] mg/L.
Equation

### Clinical Chemistry

Example 2
Generic abbreviated
NPU03276 Csf—Protein; mass c. = ? g/L
Full result NPU03276 Cerebrospinal fluid—Protein; mass concentration = 0.35 gram per litre
Abbreviated result NPU03276 Csf—Protein; mass c. = 0.35 g/L
Written expression The mass concentration of Protein in Mr. Smith’s Cerebrospinal fluid is [0.35] g/L.
Equation

### Clinical Immunology and Biobanking

Example 3
Generic abbreviated
NPU19743 P—Complement C4c; mass c. = ? g/L
Full result NPU19743 Plasma—Complement C4c; mass concentration = 2 gram per litre
Abbreviated result NPU19743 P—Complement C4c; mass c. = 2 g/L
Written expression The mass concentration of Complement C4c in Mr. Smith’s Plasma is [2] g/L.
Equation

### Clinical Microbiology

Example 4
Generic abbreviated
NPU57557 P—beta-1,3-Glucan; mass c. = 49 ng/L
Full result NPU57557 Plasma—beta-1,3-Glucan; mass concentration = 49 nanogram per litre
Abbreviated result NPU57557 P—beta-1,3-Glucan; mass c. = 49 ng/L
Written expression The mass concentration of beta-1,3-Glucan in Mr. Smith’s Plasma is [49] ng/L.
Equation

### Clinical Pharmacology

Example 5
Generic abbreviated
NPU19689 P—Ampicillin; mass c. = ? mg/L
Full result NPU19689 Plasma—Ampicillin; mass concentration = 1.5 milligram per litre
Abbreviated result NPU19689 P—Ampicillin; mass c. = 1.5 mg/L
Written expression The mass concentration of Ampicillin in Mr. Smith’s Plasma is [1.5] mg/L.
Equation

### Clinical Toxicology

Example 6
Generic abbreviated
NPU28398 U—Ethylglucuronide; mass c. = ? mg/L
Full result NPU28398 Urine—Ethylglucuronide; mass concentration = 2 milligram per litre
Abbreviated result NPU28398 U—Ethylglucuronide; mass c. = 2 mg/L
Written expression The mass concentration of Ethylglucuronide in Mr. Smith’s Urine is [2] mg/L.
Equation

### Reproduction and Fertility

Example 7
Generic abbreviated
NPU03279 SemP—Protein; mass c. = ? g/L
Full result NPU03279 Seminal Plasma—Protein; mass concentration = 45 gram per litre
Abbreviated result NPU03279 SemP—Protein; mass c. = 45 g/L
Written expression The mass concentration of Protein in Mr. Smith’s Seminal Plasma is [45] g/L.
Equation

### Thrombosis and Haemostasis

Example 8
Generic abbreviated
NPU19767 P—Fibrin D-dimer; mass c. = ? mg/L
Full result NPU19767 P—Fibrin D-dimer; mass c. = 0.5 milligram per litre
Abbreviated result NPU19767 P—Fibrin D-dimer; mass c. = 0.5 mg/L
Written expression The mass concentration of Fibrin D-dimer in Mr. Smith’s Plasma is [0.5] mg/L.
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

• ## Kind-of-quantity

### Reference

• Dybkaer R. Concept system on ‘quantity’: formation and terminology. Accredit Qual Assur. 2013;18(3):253-60.
• Dybkaer R. ISO terminological analysis of the VIM3 concepts ‘quantity’ and ‘kind-of-quantity’. Metrologia. 2010;47(3):127-34.
Date Term Note