In a report also section 3 and, if needed, section 4 is included. To each part of a property may be added a specification as a parenthetic suffix for clarification. In order to define uniquely the elements of these superordinate concepts, each element is identified by an international coding scheme identifier and a code value. This is for ease of expression in different idioms and to assure uniform spelling throughout the coding scheme for properties evolving. In clinical microbiology variability is extensive, in particular for the superordinate concepts system and result , in that a sample may originate from any part of a human or its surroundings, and the outcome of examination may be any of a plethora of bacteria and their subtypes.
Specifications are frequently the name of a particular bacterium.
The most extensively used are taxon and susceptibility . In clinical microbiology the term taxon relates to all of the hierarchical classification. It is well defined and represents only one particular concept. For this reason it has been adopted in this series of documents also for other subject fields to replace terms such as found , present , class and other. In clinical chemistry however a less well defined inhouse or a regional calibrator is often referred to and is expressed in arbitrary unit per litre in order to enable comparison of patient data over time and regionally.