|Definition by words||A reference material or an assigned quantity value|
The purpose is to compare the actual patient quantity value with the same quantity value from a reference system to indicate the clinical relevance.
The reference system can be defined by the given laboratory or a higher authority.
Reference system can be e.g.:
A pool of serum from several healthy persons
A reference material or certified Reference material from WHO
An assigned quantity value
Example 1 (Ratio scale)
Full form with a result: NPU01685 Plasma—Coagulation, tissue factor-induced; relative time(actual/norm; INR; IRP 67/40; procedure) = 1.0
Abbreviated form with a result: NPU01685 P—Coagulation, tissue factor-induced; rel.time(actual/norm; INR; IRP 67/40; proc.) = 1.0
The time of Coagulation, tissue factor-induced in Mr. Smith’s plasma divided by the time of Coagulation, tissue factor-induced in the certified reference material, IRP 67/40, is [1.0]. The measurement is performed according to a procedure defined by the laboratory.
|Example 2 (Ordinal scale)
Generic abbreviated form: NPU04207 U—Glucose; arb.c.(proc.) = ?Full form with a result: NPU04207 Urine—Glucose; arbitrary concentration(procedure) = highAbbreviated form with a result: NPU04207 U—Glucose; arb.c.(proc.) = high
The concentration of Glucose in Mr. Smith’s urine is [high] compared with the concentration of Glucose in a reference system. The measurement is performed according to a procedure defined by the laboratory.
|2019-04-02||If the reference system is used he comparison is an ordinal property and the value set is on an ordinal scale.|