IFCC/IUPAC system

To describe test results properly, it is important that ah necessary information be included in the test description. Systems developed for expressing the results produced by the clinical laboratory include the Logical Observation Identifier Names and Codes (LOINC) system and the International Federation of Clinical Chemistry/International Union of Pure and Applied Chemistry (IFCC)/IUPAC system. 

The IFCC/IUPAC system recommends that the following items be included with each test result ... 

To decide on the reference end of the examinational traceability chain, it is necessary primarily to define that which is to be examined. According to the IUPAC/IFCC Recommendation 1966 [5], the designation of a property must comprise identity of system and any pertinent components), together bearing the property, and the kind-of-property involved. Standardized templates for such designations are currently found in an IFCC/IUPAC database comprising over 10000 entries [6]. In some cases, the examination procedure becomes an integral part of the definition of the examinand. 

---