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Property values used in HL7 FHIR CodeSystem for LOINC

2026-10-28

For information regarding the LOINC Terminology Service using HL7® FHIR®, see our documentation. For general information regarding terminologies (including LOINC) in HL7 FHIR, see the their documentation. FHIR property values These are not to be confused with the...
Announcing the release of LOINC Ontology version 2.83

Announcing the release of LOINC Ontology version 2.83

2026-10-22

Regenstrief Institute and SNOMED International are pleased to announce the release of LOINC Ontology Version 2.83. This ongoing joint initiative aims to deliver seamless interoperability between LOINC and SNOMED CT by linking LOINC concepts with SNOMED CT’s clinical...

Subscribe to LOINC Ontology announcements

2026-10-21

Get updates on the LOINC Ontology by email. This mailing list is separate from our primary list for announcements. Typically we only send messages to this list when a new version of the LOINC Ontology is released. Your information will remain private and never...

Quiz: LOINC Part values

2026-10-04

This quiz has been designed to confirm your understanding of LOINC Parts and assigning appropriate values. InstagramThis field is for validation purposes and should be left unchanged.Exercise 1For the following observation, identify the appropriate value for each...
LOINC Version 2.83 Release Highlights

LOINC Version 2.83 Release Highlights

2026-08-19

We are pleased to announce the release of LOINC® Version 2.83, now available for download from the LOINC website and via our Terminology Service using HL7® FHIR®. This release continues the evolution of LOINC with new and updated content across the Laboratory,...

RELMA Welcome

2026-08-04

LOINC 2.83 and RELMA 7.16 are here! Learn More

Honorary LOINC codes

2026-07-31

Regenstrief Institute has bestowed a select few honorary LOINC codes in its history. The special codes serve as an enduring reminder of these individuals’ impact and lasting legacy on LOINC. We are forever grateful for their contributions to LOINC. The following are...

Build LOINC with us

2026-07-17

We imagine a world where people experience optimal health catalyzed by a seamless network of health information systems. What are the benefits of LOINC? Hospital systems use LOINC to ensure accurate transmission of health data within their individual facilities and...

Quiz: Get Started

2026-07-01

This quiz has been designed to confirm your understanding of LOINC fundamentals. We encourage you to review our Get Started section prior to completing this assessment. NameThis field is for validation purposes and should be left unchanged.Which of these best...

LOINC Community Webinar

2026-06-22

In addition to regular committee meetings, Regenstrief Institute holds broad events with LOINC users and stakeholders at least twice per year, the LOINC Conference each autumn and a webinar in the spring. We may have ad-hoc webinars throughout the year. Our webinars...

LOINC Award for Distinguished Contributions

2026-06-11

The LOINC Award for Distinguished Contributions honors an individual who has made sustained and enduring contributions that advance health data interoperability with LOINC. This award recognizes exceptional and enduring actions, activities, and accomplishments that...

Brand guidelines

2026-06-09

The following guidelines and recommendations outline brand and asset use, including logo, colors, content, graphic elements and trademarks without negotiating legal agreements. The LOINC marks include, but are not limited to, the LOINC name, logo, pig logo, and any...

Annual Reports

2026-06-09

Reflect on the annual accomplishments of the Health Data Standards unit within Regenstrief Institute. These annual reports have been produced as either a PDF or Video.

Evolving LOINC’s release cadence for more timely updates

2026-06-09

For over three decades, LOINC has served as the global cornerstone for health data interoperability because of the dedication, expertise, and feedback of this incredible community. As the pace of clinical innovation accelerates and the demand for real-time data...

International adoption of LOINC

2026-06-04

LOINC has registered users in nearly every country. It is a named standard in over 30 countries. LOINC concepts have been translated into many languages to meet the needs of different jurisdictions. These translations, provided by a dedicated community of volunteers,...

Archive of previous LOINC versions

2026-06-03

This archive of older LOINC releases is for informational and validation purposes only. We ask that you use the current LOINC version in your production systems. Furthermore, we recommend users update to the latest version of LOINC within 90 days of its publication....

Get LOINC announcements delivered to you

2026-06-03

Joining our mailing list for announcements is the best way to get notified of new LOINC releases. We will also keep you up to date with everything happening in the LOINC community. This isn’t a discussion list, so you won’t get bombarded with messages. You will just...

Funding support

2026-06-03

Over the years, LOINC has been supported financially by many organizations and individuals. We acknowledge the generous support of the following. Work on the LOINC terminology was initiated by and is performed under the auspices of the Regenstrief Institute. The...

Special use terms

2026-05-26

The following Special Use terms are developed in response to an urgent or emergent situation. These codes are based on the most up to date information available at the time of their creation. They have undergone the normal QA terminology process. LOINC supports their...

LOINC team members

2026-05-26

Behind the world’s most widely used clinical terminology standard for medical observations is a remarkably lean, dedicated group of terminologists, technologists, and project managers. Operating within the Health Data Standards unit of Regenstrief Institute, we are a...

Connect with the LOINC Team

2026-05-13

Whether you are seeking to expand the standard with new LOINC concepts, navigating a complex integration, or just beginning to explore how standardized terminology can transform your data exchange, we are here to support you. LOINC is the global language for health...
TOMA Health

TOMA Health

2026-05-08

TOMA Health is a digital health platform that processes clinical laboratory results in HL7 and PDF formats. We use LOINC codes to standardize and normalize laboratory test results received from multiple laboratory providers. Each incoming result is mapped to its...
Evolving LOINC’s release cadence for more timely updates

Evolving LOINC’s release cadence for more timely updates

2026-05-04

For updates to this announcement, visit loinc.org/monthly. Dear LOINC Community, For over three decades, LOINC has served as the global cornerstone for health data interoperability because of the dedication, expertise, and feedback of this incredible community. As the...
Spanish Ministry of Health

Spanish Ministry of Health

2026-04-15

The Spanish Ministry of Health provides and manages semantic resources for clinical data normalization and interoperability of various medical domains. LOINC in one of the reference terminologies used for codifying laboratory information.

Who uses LOINC?

2026-04-15

This is a directory of healthcare organizations, government agencies, researchers, and software providers from around the world who use LOINC in their clinical systems, laboratory workflows, or digital health products. Inclusion in this directory is for informational...

Committee member application

2026-03-29

Members of LOINC committees must be approved by the secretariat, Regenstrief Institute. We welcome applications for new members who meet the qualifications for membership. Please complete the information below for consideration. You must be logged in with your LOINC...
LOINC Version 2.82 Release Highlights

LOINC Version 2.82 Release Highlights

2026-02-24

We are excited to announce LOINC® Version 2.82, which delivers new and revised content updates and technical enhancements, reflecting continued collaboration with the global health and standards community and ongoing stewardship to advance global interoperability,...

Stan Huff

2025-12-01

Stanley M. Huff, MD has been one of the most influential leaders in the development, governance, and adoption of LOINC within the global health informatics community. As long-time co-chair of the LOINC Committee, he has shaped the strategic direction of the...
Clem McDonald

Clem McDonald

2025-11-24

Simply put, Clem is the father of LOINC but his accomplishments and influence are even more immense. Clement J. McDonald, MD, a pioneer in the use of health information technology to improve healthcare. He developed one of the world’s first operational electronic...

About LOINC

2025-11-21

LOINC, which stands for Logical Observation Identifiers Names and Codes, was initiated in 1994 by Clem McDonald, then an investigator at Regenstrief Institute, a non-profit medical research organization associated with Indiana University. Indianapolis-based...

Our pig mascot

2025-11-21

The “unofficial” official mascot of LOINC is our trademark pig. So, what’s with the pig? When you first read “LOINC” you might have wondered how to pronounce it. Actually, it’s pretty easy. It’s “oink”, like the...

LOINC Day

2025-11-21

Each year on February 16, we celebrate LOINC Day. It was on this date in 1994 that Clem McDonald, Stan Huff, and other founding members of the LOINC Committee first met and began creating what would become an integral standard for health data around the world....
LOINC Version 2.81 Release Highlights

LOINC Version 2.81 Release Highlights

2025-08-12

We are pleased to announce the release of LOINC® version 2.81, now available for download from the LOINC website. This release reflects the growing, collaborative effort of a global community of stakeholders who actively submit content aligned with evolving priorities...

Arabic (Jordan)

2025-07-23

MedLabs Group: Dr. Manar Agha Al-Nimer, MSc, PhD Integration, PDHDA-Vice CEO; Dr. Majdi Abu Hantash, MD, Consultant Clinical Pathologist-Chief Medical Information Officer; Dr. Nashat Dahabreh, PhD Biochemistry – Vice CEO – Scientific Affairs; Dr. Aiman...

LOINC Knowledge Base

2025-06-18

Our knowledge base is a compendium of documentation regarding LOINC. It is collected in several major divisions which relate to different aspects of the terminology. The LOINC Users’ Guide is the primary resource outlining methodology, heuristics, and editorial...

LOINC Ontology

2025-04-28

This location, loinc.org/ontology, is the canonical home of the LOINC Ontology, replacing the former loincsnomed.org. Previous locations will redirect here indefinitely. We suggest updating any links or bookmarks you have set. The LOINC Ontology: A LOINC and SNOMED CT...
Free webinar to introduce the LOINC Ontology version 1.0

Free webinar to introduce the LOINC Ontology version 1.0

2025-03-04

Regenstrief Institute and SNOMED International are set to debut the first production release of the LOINC Ontology: A LOINC and SNOMED CT Interoperability Solution. The LOINC Ontology is designed to enhance the ability of health data exchange implementers worldwide to...

LOINC Version 2.80 Hotfix is now available

2025-02-26

Version 2.80 Hotfix To correct issues introduced in Version 2.79 and add terms accidentally omitted, a Hotfix labeled Version 2.80 was released in February 2025. All users who have implemented Version 2.79 into their systems are encouraged to upgrade to Version 2.80...

Upload reference information

2025-01-06

Upload reference information Send us your reference documents It is critical for us to have any reference information that goes with your term request(s). For instance, this is where you should include the package insert for a new test. You must be logged in to make a...

Delete your current request

2024-12-05

Delete your current request Are you sure? Clicking the button below will delete your request and remove all information you have entered. This is a good option if you wish to start over. You must be logged in to make a requestLog...

Review your request

2024-12-05

Review your request Please confirm the contents of your request prior to submitting Once submitted, your request will be entered into our system for processing. It may take one or more days before appearing in My Submissions. You must be logged in to make a requestLog...

Your requested terms

2024-12-04

Your requested terms Enter your individual term request details The information you provide about your local test/measurement and how it is used is most helpful to us. In addition to the required LOINC axes values, enter as much as you know. Your request is limited to...

Upload your spreadsheet

2024-12-04

Upload your spreadsheet Select your spreadsheet of terms to be added to your request The order of the columns should be as follows. You may download our submissions template to compile your term requests. The template includes notes in the header row to guide you....

About your LOINC term request

2024-12-04

About your LOINC term request Tell us about your request Details about your project will help us understand the context of the request. On the next page you will either upload or manually enter specific term details such as Component (Analyte), Property, Time Aspect,...

LOINC Submissions Policy

2024-12-02

The LOINC® table provides a set of universal identifiers and names for laboratory and other clinical observations (as well as orders for those observations) designed to facilitate exchange and pooling of clinical data across institutions for improved clinical care,...

Your LOINC term request

2024-11-26

Your LOINC term request Creating your term request We will walk you through the process of creating your new term proposal. After each step your progress will be saved. You may stop at any point and then come back to pick up where you left off. A request may contain...

Request changes to existing LOINC terms

2024-11-26

Request changes to existing LOINC terms We welcome feedback If you find a term in LOINC that you believe is wrong or misrepresented, please contact us, calling attention to the term (code and name), the suggested action, and your rationale. You must be logged in to...

Regenstrief Institute Health Data Standards

2024-11-26

Health Data Standards (HDS) is the unit within Regenstrief Institute which develops LOINC and UCUM. This dedicated group also collaborates with other standards development organizations and industry consortiums. The LOINC Team includes members of HDS and external...

Requesting new LOINC terms

2024-11-26

Requesting new LOINC terms LOINC grows because you ask Since its inception, Regenstrief Institute has developed LOINC as an open standard. We welcome requests for new LOINC terms. It is because of submissions from the LOINC community that we’ve been able to grow...

Contact LOINC

2024-10-15

We would love to hear from you about general questions, comments, or if you notice something that is broken. We have also provided helpful links which may help address any common questions or issues. All fields are required, except the final email list option. Logged...

LOINC License

2024-10-09

Upon changes to the LOINC® License, all registered users are asked to agree to the updated language before proceeding with any website activities. Please review the full text of the copyright and terms of use below. Or, you can log out of your account. Contact us...

Get started with LOINC

2024-10-09

Get started with LOINC Last updated on July 2, 2026 at 11:56 am EDT Foundational facts LOINC is the international standard for identifying health observations, measurements, and documents. Regenstrief Institute develops and maintains the standard with the help of a...
LOINC version 2.78 is now available

LOINC version 2.78 is now available

2024-08-06

The Health Data Standards (HDS) team within Regenstrief Institute is very proud to announce the release of LOINC version 2.78 This update includes 1,589 new concepts and 1,416 edits to existing LOINCs. For a breakdown by type, a summary of new and updated content, and...

Edit your LOINC user account

2024-07-02

We ask that you keep information in your LOINC account current. This information is used when you submit new LOINC term requests and to personalize your experience on this website. Your data will remain confidential and never sold or exchanged.

Download LOINC

2024-06-27

The LOINC database is available for download with your LOINC username and password. In addition to the LOINC table files, this zip archive includes a number of accessory files which can prove useful in your implementation or use of LOINC. LOINC Complete You must be...

Mapping and LOINC

2024-06-26

Mapping serves as a foundational pillar for achieving true semantic interoperability across diverse clinical systems. This mapping process primarily operates on two critical fronts: Internal codes to LOINC, the most common type of mapping activity LOINC to another...

LOINC Community

2024-06-26

This page is not yet established. Until it is, we invite you to visit these areas: LOINC Committees Collaboration International Organizations using LOINC Community Forum

LOINC Committees

2024-06-26

Introduction To help guide LOINC development, Regenstrief Institute has organized several LOINC Committees. Comprised of volunteers from academia, industry, and government, the LOINC Committees serve as the main advisory body for LOINC. Mission The purpose of each...

LOINC Conference Series

2024-06-26

The LOINC Conference information will reside at conference.loinc.org until it is migrated to this new website.

How to access LOINC

2024-06-26

How to access LOINC There are numerous was to access LOINC’s database of codes, from downloading the file to accessing the content programmatically. These options require you to be logged in to our website. If you do not have a LOINC account, you can sign up for...
LOINC version 2.77 is now available

LOINC version 2.77 is now available

2024-02-27

LOINC version 2.77 is available for download from the LOINC website.  We are excited to announce the release of LOINC version 2.77 that includes new and edited concepts in Laboratory, Clinical, and other domains. Through our release we continue the work to promote...

Ukrainian (Ukraine)

2024-02-05

Development of Ukrainian content is going on under the stewardship of the Ministry of Health of Ukraine, National Health service of Ukraine with support of multiple stakeholders and donors

Polish (Poland)

2024-02-05

Medical University of Lodz (UMED) and Polish Society of Laboratory Diagnostics (PTDL)

Turkish (Turkey)

2024-02-05

LOINC Turkish Translation Group and the Turkish Ministry of Health

French (France)

2024-02-05

ANS – Agence du Numérique en Santé French e-Health Agency

Greek (Greece)

2024-02-05

Konstantinos Chalkias, MD, MSc, Ioannis Boutas, MD, Eirini Tzourtzoukli, Medical Coding Department, KE.TE.K.N.Y. S.A., the Greek DRG Institute

German (Germany)

2024-02-05

Friedrich-Alexander-Universität Erlangen-Nürnberg on behalf of the Federal Institute for Drugs and Medical Devices (BfArM)

Korean (Korea)

2024-02-05

Korean Ministry for Health, Welfare, and Family Affairs

Spanish (Spain)

2024-02-05

the Clinical Laboratory Committee of SERVICIO EXTREMEÑO DE SALUD, with the support of IQVIA

Complete your LOINC account

2024-01-19

CompanyThis field is for validation purposes and should be left unchanged.Complete your LOINC account You’re almost done! Finish creating your new LOINC account by entering the information below.Email(Required) Username(Required)Password(Required)We recommend creating...

Create a LOINC account

2023-11-07

EmailThis field is for validation purposes and should be left unchanged.Create a LOINC account We invite you to create a user account which can be used to access a wide array of LOINC tools and resources. Once you complete the form below, we will send you a message to...

Privacy Policy

2023-11-02

Who we are The LOINC website address is: https://loinc.org. LOINC is a health data standard maintained by Regenstrief Institute, Inc. User profile images An anonymized string created from your email address (also called a hash) may be provided to the Gravatar service...
LOINC version 2.76 patches errors identified in 2.75 concepts

LOINC version 2.76 patches errors identified in 2.75 concepts

2023-09-18

LOINC® version 2.76 is available for download from the LOINC website and via the LOINC Terminology Service using HL7® FHIR® Data quality and consistency are of utmost importance to LOINC. After version 2.75 was released in August, we were notified by members of the...

Notice of forthcoming LOINC hotfix release (updated)

2023-08-25

To address errors in a number of concepts, we are preparing a hotfix release of LOINC to be published in mid-September. This update will be given the 2.76 version number. Further details, including a list of affected codes, will be provided once available. Update for...
LOINC version 2.75 adds almost 2,000 new concepts

LOINC version 2.75 adds almost 2,000 new concepts

2023-08-15

Important notice: A hotfix update to this release has been published. LOINC® version 2.75 is available for download from the LOINC website and via the LOINC Terminology Service using HL7® FHIR®.  We are pleased to announce the release of LOINC version 2.75 that...
LOINC version 2.74 is now available

LOINC version 2.74 is now available

2023-02-22

LOINC version 2.74 is available for download from the LOINC website. We are pleased to announce the release of LOINC version 2.74 that includes new, edited, and newly mapped concepts in Laboratory, Clinical, Survey, and other domains.  It features the streamlined file...

LOINC version 2.73 is now available

2022-08-08

LOINC version 2.73 is available for download from the LOINC website. Informed by tracking healthcare trends, evaluating concept requests, and listening to guidance from our community, this release contains new, edited, and newly mapped concepts in Laboratory,...

LOINC version 2.72 is now available

2022-02-16

LOINC version 2.72 is available for download from the LOINC website.  Informed by tracking health care trends, evaluating concept requests, and listening to guidance from our community, this release contains new and edited concepts in Laboratory, Clinical, Survey and...

LOINC version 2.71 is now available for free download

2021-08-24

The latest release of LOINC marks the first one on our new schedule and adds 400 new terms and numerous updates. Version 2.71 is now available for free from the LOINC website. Noteworthy changes with this release SCHEDULE: To better align with users’ needs and our...

LOINC Version 2.70 is now available for free download

2021-06-10

The latest release of LOINC adds 1,340 new terms and numerous updates. Version 2.70 is now available for free from the LOINC website. Changes to LOINC release schedule To better align with users’ needs and our internal timelines, LOINC’s twice-yearly release schedule...

Letter from LOINC’s new executive director

2021-01-15

We are excited to announce that Marjorie Rallins, a nationally recognized leader in standards and informatics, has been named as the new executive director of LOINC®. Dr. Rallins comes from the PCPI® Foundation in Chicago, where she was vice president and chief...

LOINC Version 2.69 and RELMA Version 7.2 are now available

2020-12-15

LOINC version 2.69 and RELMA version 7.2 are here! Highlights from this release are described below, and we encourage you to read the individual Release and Readme notes for more details. Remember, the LOINC Release notes contain information about changes to content...

LOINC Version 2.68 and RELMA Version 7.1 are now available

2020-06-17

Overview We are excited to announce that LOINC version 2.68 and RELMA version 7.1 are now available! This release contains lots of new content and feature updates. We’ll cover the highlights here, and encourage you to read the LOINC Release notes and...

Experts urge use of LOINC to standardize WHO Essential Diagnostics List

2020-01-06

The following was originally posted on the Regenstrief.org website LOINC, developed at Regenstrief Institute, is an international standard for coding health information World health experts are extoling the benefit of universally coding the World Health Organization’s...

LOINC Version 2.67 and RELMA Version 7.0 are now available

2019-12-13

Overview We are excited to announce that LOINC version 2.67 and RELMA version 7.0 are now available! This release contains lots of new content and feature updates. Here is what we’ll cover in the announcement: LOINC content highlights New content Content edits...

LOINC leadership announcement

2019-09-13

Letter from Dr. Daniel Vreeman Dear LOINC friends -I am writing to share with you that I am departing Regenstrief Institute, Inc. to take a position at RTI International effective October 2019, leading RTI's work and capacity building in health data standards....

LOINC Version 2.66 and RELMA Version 6.25 are now available

2019-06-21

In this Update We are delighted to present you with another feature-packed LOINC release. Here’s the outline of what we’ll cover: LOINC content highlights New content Content edits New and updated LOINC release artifacts LOINC Change Snapshot File LOINC...

LOINC Version 2.65 and RELMA Version 6.24 are now available

2018-12-14

In this Update We are delighted to present you with another feature-packed LOINC release. There’s a lot to cover, but here’s the outline: LOINC content highlights New content Content edits Highlights of updates to other LOINC release artifacts LOINC Answer...

LOINC releases new ‘Guide for Using LOINC Microbiology Terms’

2018-08-17

LOINC 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...

LOINC Version 2.64 and RELMA Version 6.23 are now available

2018-06-15

In this Update We are delighted to present you with another feature-packed LOINC release. There’s a lot to cover, but here’s the outline: LOINC content highlights New content Content edits Highlights of updates to other LOINC release artifacts New LOINC...

Errors in LOINC 2.63

2018-01-19

A minor error has been discovered with 4 terms in the LOINC 2.63 release. These terms contain NULL parts. 87353-9 Actinobacillus pleuropneumoniae IgG Ab/Positive control by Immunoassay 87421-4 Glucose [Mass/volume] in Blood –pre-meal 88169-8 Microscopic...

LOINC Version 2.63 and RELMA Version 6.22 are now available

2017-12-15

In this Update We are delighted to present you with another feature-packed LOINC release. There’s a lot to cover, but here’s the outline: LOINC content highlights New content Content edits Highlights of updates to other LOINC release artifacts LOINC Answer...

LOINC celebrates World Standards Week

2017-10-14

Standards are everywhere, working every day to keep you safe and to keep the products you purchase high-quality. They are important for other reasons, too, and are definitely something to celebrate. It’s World Standards Week and in honor of this special event, we have...

LOINC Version 2.61 and RELMA Version 6.20 Available

2017-06-23

In this Update We pleased to share with you another feature-packed LOINC release. We’ve significantly enhanced the content in LOINC and are excited to share several new release artifacts and documentation based on significant input from the LOINC user community....

LOINC Version 2.59 and RELMA Version 6.18 Available

2017-02-22

A Limited, Patch Release Like 65° F weather in February across central Indiana, it’s a bit unusual for us to publish an interim release. We aren’t planning to make a habit of it (though we will enjoy the warmer temps while they last), but we noticed some...

LOINC Version 2.58 and RELMA Version 6.17 Available

2016-12-22

In this Update Once again we’ve packed a ton of great stuff into this release. Our content development has done an incredible job extending and enhancing to the LOINC database, while the software development team has added some great new features to RELMA....

RELMA Version 6.15 Now Available

2016-09-12

This is a RELMA ONLY release. No new LOINC content was added since the June 2016 release. RELMA Fixes in this Release This release of RELMA patches a couple of bugs we found in version 6.14 from the June 2016 release. If you use RELMA to export the full panel...

LOINC Version 2.56 and RELMA Version 6.14 Available

2016-06-24

In this Update Once again we’ve packed a ton of great stuff into this release. Our content development has done an incredible job extending and enhancing to the LOINC database, while the software development team has added some great new features to RELMA....

Updated LOINC 2.54 Linguistic Variants File published

2016-01-11

Revised LOINC 2.54 Linguistic Variants File re-published In our post-release review, we detected that the standalone LOINC Linguistic Variants File was not properly encoded in UTF-8. Without the proper encoding, many of the special characters in non-English languages...

Regenstrief Job Opening – .Net Software Developer

2016-01-07

Join the LOINC team! .Net Software Developer Regenstrief Institute, Inc. is seeking a .Net Software Developer to join our creative, intellectually stimulating, open work environment that creates leading edge medical informatics applications. We are looking for a...

Updated LOINC 2.54 Panels and Forms File published

2015-12-31

Revised LOINC 2.54 Panels and Forms File re-published In our post-release review, we detected a few problems with the structure of the Panels and Forms File. That file contains three worksheets (FORMS, LOINCS, and ANSWERS). The LOINCS worksheet is a subset of the main...

Regenstrief Job Opening – LOINC I Content Developer

2015-12-24

LOINC® Content Developer Regenstrief Institute, Inc. is seeking a LOINC Developer to join our creative, intellectually stimulating, open work environment that creates leading edge medical informatics applications. We are looking for a content developer to help us...

LOINC Version 2.54 and RELMA Version 6.12 Available

2015-12-22

In this Update Oh my, this is one fantastic release. We have a massive amount of new content, first ever publications of the LOINC/RSNA Radiology Playbook and the LOINC/IEEE Medical Device Code Mapping Table, and a few updates to search fields in RELMA. LOINC content...

LOINC Codes for increased standardization of test description

2015-09-24

The Regenstrief Institute Inc. and bioMérieux have signed an innovative landmark global collaboration agreement. Use of LOINC codes enable laboratories, hospitals and other users of the diagnostics solutions and their results to assign the same unique identifier to a...

LOINC Version 2.52 and RELMA Version 6.10 Available

2015-06-30

Current versions of LOINC and RELMA released June 29, 2015. In this Update Wow, have we got a great release for you this time! We’ve packed in a ton of new content, our first ever downloadable version of the Linguistic Variants, some great new RELMA features,...

Rebooted LOINC User Forum is now live

2015-03-27

Check out the refreshed LOINC User Forum The LOINC team at Regenstrief is pleased to announce that we’ve just published a redesigned LOINC User Forum (https://forum.loinc.org). As you know, the LOINC User Forum is an open space for discussion among LOINC users,...

LOINC Version 2.50 and RELMA Version 6.8 Available

2014-12-22

Current versions of LOINC and RELMA released December 22, 2014. Highlights from our best LOINC release yet New content LOINC version 2.50 contains 74,600 terms, an increase of 711 since the June 2014 version. Approximately 4640 terms have been edited, excluding edits...

LOINC Version 2.48 and RELMA Version 6.6 Available

2014-06-27

Current versions of LOINC and RELMA released June 27, 2014. Highlights from our best LOINC release yet New content LOINC version 2.48 contains 73,889 terms, an increase of 774 since the December 2013 version. Approximately 1300 terms have been edited. A total of 2201...

LOINC Premium Membership Now Live!

2014-05-15

Elevate your LOINCing. Support a noble cause. Join the LOINC Premium Membership Program today. Regenstrief is delighted to announce the launch of our brand new LOINC Premium Membership Program. We’ve put together a collection of premium LOINC resources and...

New LOINC Common Orders Project Launched within the S&I Framework

2014-01-08

The use of non-standardized local codes or terminology to describe laboratory test orders varies widely among laboratories. Universal use of LOINC coding for laboratory order and result information in a structured and systematic fashion is an essential component of...

LOINC Version 2.36 and RELMA Version 5.3 Available

2013-12-27

Current versions of LOINC and RELMA released June 30, 2011. New Features New LOINC Content LOINC version 2.36 contains 65,004 terms, an increase of 3,749 since the December 2010 version. That’s our largest batch yet! Approximately 1,920 terms have been edited. ...

LOINC Version 2.46 and RELMA Version 6.4 Available

2013-12-26

Current versions of LOINC and RELMA released December 26, 2013. LOINC version 2.46 has some nice treats in it New content LOINC version 2.46 contains 73,115 terms, an increase of 490 since the June 2013 version. Approximately 300 terms have been edited. A total of...

LOINC Version 2.44 and RELMA Version 6.2 Available

2013-06-29

Current versions of LOINC and RELMA released June 29, 2013. LOINC version 2.44 is our best release yet New content LOINC version 2.44 contains 72,625 terms, an increase of 1,161 since the December 2012 version. Approximately 2,408 terms have been edited. A total of...

LOINC Version 2.42 and RELMA Version 6.0 Available

2012-12-28

Current versions of LOINC and RELMA released December 28, 2012. LOINC version 2.42 is the 50th release! We’re very excited to deliver this special edition to you. Since the first release back in 1995 until now, it has been nothing short of extraordinary seeing...

Upcoming Changes for December 2012 and Future Releases

2012-11-14

Here is a little sneak peak about some of the upcoming changes planned for future LOINC releases. Hi, we wanted to tell you about a few new things that are headed your way! Field Changes to LOINC Table (all formats) In the upcoming December 2012 LOINC release,...

Regenstrief and IHTSDO start collaborative efforts

2012-07-12

Indianapolis, USA and Copenhagen, Denmark: July 12, 2012 The Regenstrief Institute, whose Logical Observation Identifiers Names and Codes, or LOINC, is the most accepted international terminology for medical tests and measurements, and the International Health...

LOINC Version 2.40 and RELMA Version 5.8 Available

2012-07-02

Current versions of LOINC and RELMA released June 30, 2012. New Features New LOINC Content LOINC version 2.40 contains 70,689 terms, an increase of 2,339 since the December 2011 version. Approximately 1,055 terms have been edited.  A total of 1,813 terms have been...

New SI Version of the LOINC Top 2000+ Lab Observations

2012-07-01

Regenstrief Institute and the LOINC Development Team are pleased to announce the availability of a new SI version of the user-favorite LOINC Top 2000+ Lab Observations list and mapper’s guide. Download both the SI and US versions of the LOINC Top 2000+...

RELMA Version 5.6 Now Available

2012-01-30

Current RELMA version released January 30, 2012 This is a RELMA ONLY release. No new LOINC content was added since the December 2011 release. RELMA Fixes in this Release This release of RELMA patches a couple of bugs we found in the version 5.5 release from December...

LOINC Version 2.38 and RELMA Version 5.5 Available

2011-11-30

New Features New LOINC Content LOINC version 2.38 contains 68,350 terms, an increase of 3,346 since the June 2011 version. Approximately 490 terms have been edited and 1,765 terms have been deprecated. Some of the new content highlights in this release include terms...

HL7 and Regenstrief Institute Sign Statement of Understanding

2011-11-29

INDIANAPOLIS — Health Level Seven® (HL7®) International, the global authority on standards for interoperability of health information technology with members in 55 countries, and the Regenstrief Institute, Inc., an internationally respected healthcare and...

Table of Example UCUM Codes for Electronic Messaging Now Available

2011-09-28

The LOINC Development Team is very pleased to announce the availability of a new table of example UCUM codes for use in HL7 and other electronic messages: Common LOINC Result and Universal Order Codes This is a draft enumeration of The Unified Code for Units of...

LOINC.org Reaches 10,000 Member Milestone!

2011-02-28

Wow, loinc.org just reached 10,000 users from 140 countries! We just wanted to take the opportunity to say thanks to all of you for helping LOINC continue to grow and improve. With about 10 new accounts each day, the LOINC community is flourishing. It’s real...

RELMA Version 5.1 Available

2011-02-17

Current RELMA version released February 17, 2011. New RELMA Features RELMA stores various settings such as the path to the LMOF3.MDB database and the path to the RELMA.MDB database in a file on the user’s machine. These settings have been preserved as RELMA has...

LOINC Version 2.34 and RELMA Version 5.0 Available

2010-12-29

Current versions of LOINC and RELMA released December 29, 2010. New Features New LOINC Content LOINC version 2.34 contains 61,255 terms, an increase of 2288 since the June 2010 version. Approximately 695 terms have been edited.  A total of 1,704 terms have been...

Regenstrief Launches New Web LOINC Search Tool

2010-06-30

Regenstrief is pleased to announce the launch of a new web application for searching LOINC! The LOINC team at Regenstrief is proud to announce the launch of a new web application that is now available for searching LOINC at: http://loinc.org/websearch We’ve...

RELMA

2026-06-10

Regenstrief Institute provides a Windows-based mapping utility called RELMA® for searching the LOINC database and mapping local codes to LOINC codes. RELMA is an acronym for the Regenstrief LOINC Mapping Assistant. Maintenance mode We have placed the RELMA...

Collaboration

2026-06-04

We are committed to working together with other standards development organizations and related groups to help health data move seamlessly when and where it’s needed. Since its inception LOINC has been built as an open standard, and Regenstrief Institute is committed...

Accessibility

2024-04-08

LOINC is dedicated to providing a user experience that meets the needs of as many visitors as possible. We will continue to improve the accessibility and usability of this website, all LOINC websites and services, so that everyone has a productive experience. This...

SearchLOINC

2024-04-04

Welcome This feature-rich tool allows you to locate terms within LOINC’s database of 112,405 concepts as well as Parts, Answer Lists, and Groups. Once you identify your set of applicable codes, you can export the data. You can also export full LOINC Panel structures...

Home

2023-11-08

 LOINC is the international standard for identifying health observations, measurements, and documents. Get started.  Pre-release, special use codes are available for emergent situations. We support their use in this unique situation. Register now for the 2026 LOINC...