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A key deliverable of this collaboration is an extension that integrates LOINC’s granular laboratory observables into SNOMED CT’s framework, increasing LOINC’s computability in a SNOMED-compatible structure.  By aligning these terminologies, the extension supports data harmonization, advanced analytics, and improved patient care. The first production version of the LOINC ontology, released in March 2025 focuses on laboratory observables, covering terms representing at least 80% 75% of test volume based on LOINC’s Top 20,000 usage rankings, derived from U.S. data.

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