Arbitrary number ratio
Definition in words 
Number ratio of component B in system 1 compared with number ratio of component B in a reference system Note: The reference system is defined by the laboratory 


Result type

Ordinal scale 
Example 1 Value set={none < some < high < very high} Example 2 Value set={low < normal< high } Example 3 Value set={0 < 1 < 2} Example 4 Value set={negative < positive} Example 5 Value set={+ < ++ < +++} 

Unit 
None  
Special rule(s) in the NPU syntax 
“Procedure” is stated in the specification to the kindofproperty in the NPU definition. “Procedure” indicates that the measurement procedure must be stated somewhere else than the NPU code and there may be difficulties in comparing values for the same NPU code. 

Reference 

Laboratory field 
Examples 


Allergology  Generic abbreviated form  NPU58743 B—Erythroblasts/Leukocytes; arbitrary number ratio(proc.) = ? 
Full form with a result  NPU58743 Blood—Erythroblasts/Leukocytes; arbitrary number ratio(procedure) = ?  
Abbreviated form with a result  NPU58743 B—Erythroblasts/Leukocytes; arbitrary number ratio(proc.) = ?  
Written expression  The arbitrary threshold concentration of Aggregation, thrombininduced of thrombocytes in Mr. Smith’s blood is [low], compared with arbitrary threshold concentration of Aggregation, thrombininduced of thrombocytes in a reference system. The measurement is performed according to procedure defined by the laboratory.  
Notes 
The reference system is defined by the laboratory. “Low” is a value according to a value set defined by the laboratory. 

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

Kindofproperty

Nominal kindofproperty

Kindofquantity

Ordinal kindofquantity

Arbitrary number ratio



Reference 

Date  Term  Note 

20190411  Arbitrary number ratio  Term established 
NPU term identifier 
QU108563 