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 79,900 registered users from 175 countries use LOINC to move data seamlessly between systems.
LOINC Award for Distinguished Contributions
See the 2019 recipient of our annual award.
Panel Browser
Peruse the various types of Panels available within LOINC. This new tool allows you view LOINC Panel content by category.
Request a new LOINC term
You can now submit your request for a new LOINC from our website. Follow our steps to make your submission.
search.loinc.org
Explore all the LOINC codes directly in your web browser. More Info
Sponsor LOINC
Get special benefits and tools by becoming a LOINC Premium Member.
Learn LOINC
Find resources and watch videos to get you LOINC-ready fast.
LOINC Essentials
Learn Dr. Vreeman's secrets for mapping local codes to LOINC.