Synonym

Volume flow rate, mean volume rate, volume rate of flow 
Abbreviation

Vol.rate 
Definition in words

Change of volume of component B divided by the difference of time in system 1 
Definition by equation


Result type

Rational scale 
 Value sets are positive numerical values (a=nb; a≠nb)
 Algebraic operations are allowed

Numerical values from 0∞ 
Unit

µL/s, ml/s, L/min, etc. 
Nonrecommended term

Volume flux, flux, flow, discharge, flow rate, discharge rate, volume per unit time 
Reference

Ferard G, Dybkaer R, FuentesArderiu 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

NPU28812 Kidn.—Glomerular filtration; vol.rate = ? mL/min 
Full result 
NPU28812 Kidneys—Glomerular filtration; volume rate = 120 mL/min 
Abbreviated result 
NPU28812 Kidn.—Glomerular filtration; vol.rate = 120 mL/min 
Written expression 
The volume rate of Glomerular filtration of Mr. Smith’s kidneys is [120] mL/min 
Equation 

Example 2 
Generic abbreviated

NPU18284 Pt—Urine; vol.rate = ? L/d 
Full result 
NPU18284 Patient—Urine; volume rate = 2.5 L/d 
Abbreviated result 
NPU18284 Pt—Urine; vol.rate = 2.5 L/d 
Written expression 
The volume rate of Mr. Smith‘s Urine is [2.5] L/d 
Equation 

Reference

NPU database, https://www.ifcc.org/ifccscientificdivision/sdcommittees/cnpu/npusearch/ and http://www.labterm.dk/default.aspx 

Kindofproperty

Nominal kindofproperty

Kindofquantity

Unitary kindofquantity

Rational unitary kindofquantity
Reference

 Dybkaer R. Concept system on ‘quantity’: formation and terminology. Accredit Qual Assur. 2013;18(3):25360.
 Dybkaer R. ISO terminological analysis of the VIM3 concepts ‘quantity’ and ‘kindofquantity’. Metrologia. 2010;47(3):12734.

Date 
Term 
Note 
19960101 
Volume rate 
Term established 