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 66,600 registered users from 172 countries use LOINC to move data seamlessly between systems.

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New ‘Guide for Using LOINC Microbiology Terms’

Title page to Guide for Using Microbiology TermsLOINC has unveiled a new resource to help users choose the correct LOINC code for microbiology and infectious disease laboratory tests. The Guide for Using LOINC Microbiology Terms details best practices to be used by in vitro diagnostic (IVD) assay vendors, laboratory professionals, and anybody else who is mapping microbiology tests to LOINC. More

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

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LOINC Essentials

Learn Dr. Vreeman's secrets for mapping local codes to LOINC.