The international standard for identifying health measurements, observations, and documents.
Reference labs, healthcare providers, government agencies, insurance companies, software and device manufacturers, researchers, and consumers from around the globe use LOINC to identify data and move it seamlessly between systems.
New LOINC mapping guides
We have created six new guides for using LOINC terms across numerous laboratory domains.
Available now: LOINC version 2.73
Learn all about the additions and updates included in this new version of LOINC.
Try the new LOINC Hierarchy Browser
This resource allows you to browse LOINC concepts across several hierarchies.
SARS-CoV-2 and COVID-19 INFORMATION