Number ratio (num.ratio)
Synonym 
Chemical amount  

Abbreviation 
Num.ratio  
Definition in words 
Number of component F divided by number of component G in system 1 Note 1: Component B is the quotient of component F and component G. Note 2: Component F ≠ Component G (≠ means “not equal to”) Note 3: Component F ∉ Component G (∉ means “is not an element of”) 

Definition by equation 


Systematic terms

Number ratio of component B in system 1  
Ratio scale 

Numerical values from 0∞  
Unit 
10^{6}, 10^{3}, 1 (one), 10^{3}, 10^{6}, etc. The unit “1” (one) is ommited in the NPU syntax. 

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. doi:10.1039/9781782622451. 
Laboratory field 
Examples 


Clinical Chemistry 
Example 1  
Generic abbreviated form 
NPU56123 B—Erythroblasts/Leukocytes; num.ratio = ? 

Full form with a result 
NPU56123 Blood—Erythroblasts/Leukocytes; number ratio = 0.01


Abbreviated form with a result  NPU56123 B—Erythroblasts/Leukocytes; num.ratio = 0.01  
Written expression  The number ratio of Erythroblasts/Leukocytes in Mr. Smith’s blood is [0.01]  
Equation



Example 2  
Generic abbreviated form 
NPU58222 B—Neutrophils/Lymphocytes; num.ratio = ?


Full form with a result 
NPU58222 Blood—Neutrophils/Lymphocytes; number ratio = 1.65


Abbreviated form with a result  NPU58222 B—Neutrophils/Lymphocytes; num.ratio = 1.65  
Written expression  The number ratio of Neutrophils/Lymphocytes in Mr. Smith’s blood is [1.65]  
Equation 


Clinical Immunology 
Example 3


Generic abbreviated form 
NPU21856 Lymcs(B)—Tlymphocytes(helper/cytotox); number ratio = ?


Full form with a result 
NPU21856 Lymphocytes(Blood)—Tlymphocytes(helper/cytotox); number ratio = ?


Abbreviated form with a result 
NPU21856 Lymcs(B)—Tlymphocytes(helper/cytotox); number ratio = ?


Written expression  The number ratio of Tlymphocytes(helper/cytotox) in Mr. Smith’s blood is [?]  
Equation  
Example 4  
Generic abbreviated form 
NPU56977 Lymcs(BAL)—Tlymphocytes(helper/cytotox); number ratio = ?


Full form with a result 
NPU56977 Lymphocytes(Bronchoalveolar Lavage Fluid)—Tlymphocytes(helper/cytotox); number ratio = ?


Abbreviated form with a result  NPU56977 Lymcs(BAL)—Tlymphocytes(helper/cytotox); number ratio = ?  
Written expression  The number ratio of Tlymphocytes(helper/cytotox) in Mr. Smith’s Bronchoalveolar Lavage Fluid is [?]  
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

Number ratio




Reference 

Date  Term  Note 

19960101  Number ratio  Term established 
NPU term identifier 
QU71685 