The international standard for identifying health measurements, observations, and documents.

Reference labs, healthcare organizations, U.S. federal agencies, insurance companies, software vendors, in vitro diagnostic testing companies, and more than 88,000 registered users from 176 countries use LOINC to move data seamlessly between systems.

It’s free, but invaluable.

Now available: Download your free copy of LOINC version 2.67

Panel Browser

Peruse the various types of Panels available within LOINC. This newly updated tool allows you view LOINC Panel content by category.

Help us create six new Guides

We are writing guides across six additional laboratory domains. Sign up to participate in the next round of guide creation and testing!

Fall 2019 LOINC Committee Meetings

Catch up on what was discussed at the public Laboratory LOINC and Clinical LOINC committee meetings on Oct. 23 and 25.

Explore all the LOINC codes directly in your web browser. More Info

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