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Unity among the units - a position paper by the DGKL
Ralf Junker1, Andreas Bietenbeck2, Michael Kiehntopf3
1Institute for Clinical Chemistry, Schleswig-Holstein University Hospital, Kiel, Germany.
Clinical Chemistry and Laboratory Medicine
|March 17, 2026
Summary
Laboratory medical units in Germany remain inconsistent post-reunification. Standardizing measurement units enhances patient safety and enables secure digital health records by reducing treatment errors from misinterpreted lab findings.
Area of Science:
- Medical Laboratory Science
- Clinical Chemistry
- Health Informatics
Background:
- Discrepancies persist in laboratory medical measurement units between eastern (SI units) and western (conventional units) Germany over 30 years post-reunification.
- Mixed unit usage is observed in border regions and Berlin, particularly in multi-regional institutions.
- Global trends favor uniform national measurement unit standards.
Purpose of the Study:
- To summarize the risks of inconsistent laboratory measurement units.
- To present opportunities for standardization and criteria for selecting appropriate units.
- To propose a unified approach to laboratory medical parameter units in Germany.
Main Methods:
- Review and summarization of risks associated with inconsistent units.
- Development of decision criteria for unit selection.
- Drafting a proposal for Germany-wide unit standardization based on international standards.
Main Results:
- Inconsistent units pose risks of incorrect treatment due to misinterpreted laboratory findings.
- Standardization enhances patient safety through secure physician communication.
- Standardized units improve interoperability in digital medicine and electronic health records.
Conclusions:
- Standardizing laboratory measurement units is crucial for patient safety and efficient healthcare.
- Clearer unit semantics and standardization facilitate reliable digital health processes.
- A recommendation for Germany-wide uniform units, based on international standards, has been drafted.
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