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 83,700 registered users from 175 countries use LOINC to move data seamlessly between systems.

It’s free, but invaluable.

LOINC Conference - Fall 2019

New Version 1.1

Download our updated version of the Guide for Using LOINC Microbiology Terms with an additional chapter.

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.

Submission Queue Details

Browse through the LOINC terms currently in development. Updates are posted daily. See page for important disclaimer.

search.loinc.org

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

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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.