LOINC
LOINC (Logical Observation Identifiers Names and Codes) is the international standard for identifying health measurements, laboratory and clinical observations, and documents; it provides universal codes and structured names enabling interoperable exchange and aggregation of clinical, laboratory, and other health data worldwide.
[{"category": "Organization", "contact_details": [{"contact_type": "url", "value": "https://loinc.org/contact/"}], "label": "Regenstrief Institute (LOINC)"}]
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{"activity_status": "active", "category": "DataModel", "contacts": [{"category": "Organization", "contact_details": [{"contact_type": "url", "value": "https://loinc.org/contact/"}], "label": "Regenstrief Institute (LOINC)"}], "description": "LOINC (Logical Observation Identifiers Names and Codes) is the international standard for identifying health measurements, laboratory and clinical observations, and documents; it provides universal codes and structured names enabling interoperable exchange and aggregation of clinical, laboratory, and other health data worldwide.", "domains": ["clinical", "biomedical", "health", "genomics"], "homepage_url": "https://loinc.org/", "id": "loinc", "infores_id": "loinc", "layout": "resource_detail", "license": {"id": "https://loinc.org/license/", "label": "LOINC License (free registration required)"}, "name": "LOINC", "products": [{"category": "GraphicalInterface", "description": "Web-based tools including SearchLOINC and Hierarchy Browser for interactive exploration of LOINC content (free login required)", "format": "http", "id": "loinc.web", "name": "LOINC Website & Browsers", "original_source": ["loinc"], "product_url": "https://loinc.org/search/"}, {"category": "ProgrammingInterface", "description": "HL7 FHIR-based API providing programmatic access to LOINC terminology content (requires free LOINC login)", "format": "http", "id": "loinc.api.fhir", "is_public": false, "name": "LOINC FHIR API", "original_source": ["loinc"], "product_url": "https://loinc.org/fhir/"}, {"category": "DataModelProduct", "compression": "zip", "description": "Complete LOINC release archive (table and accessory files) downloadable after free registration", "format": "mixed", "id": "loinc.complete", "latest_version": "2.81", "name": "LOINC Complete Release", "original_source": ["loinc"], "product_url": "https://loinc.org/download/loinc-complete/", "warnings": ["File was not able to be retrieved when checked on 2026-01-30_ HTTP 503 error when accessing file", "File was not able to be retrieved when checked on 2026-01-28_ HTTP 503 error when accessing file", "File was not able to be retrieved when checked on 2026-02-04: HTTP 503 error when accessing file"]}, {"category": "DataModelProduct", "description": "Archive of past LOINC releases for version-specific implementations", "format": "mixed", "id": "loinc.archive", "name": "LOINC Release Archive", "original_source": ["loinc"], "product_url": "https://loinc.org/downloads/archive/", "warnings": ["File was not able to be retrieved when checked on 2026-01-30_ HTTP 503 error when accessing file", "File was not able to be retrieved when checked on 2026-01-28_ HTTP 503 error when accessing file", "File was not able to be retrieved when checked on 2026-02-04: HTTP 503 error when accessing file"]}, {"category": "DocumentationProduct", "description": "LOINC Mission, Vision, and Guiding Principles for open terminology development (CC-BY 4.0 licensed document)", "id": "loinc.principles", "name": "LOINC Principles Document", "original_source": ["loinc"], "product_url": "https://loinc.org/principles/", "warnings": ["File was not able to be retrieved when checked on 2026-01-30_ HTTP 503 error when accessing file", "File was not able to be retrieved when checked on 2026-01-28_ HTTP 503 error when accessing file", "File was not able to be retrieved when checked on 2026-02-04: HTTP 503 error when accessing file"]}, {"category": "GraphProduct", "description": "Turnkey neo4j distributions that deploy fully-indexed, standalone UBKG instances as neo4j graph databases, running in a Docker container. Requires UMLS API key to access.", "dump_format": "neo4j", "id": "ubkg.neo4j", "name": "UBKG Neo4j Docker Distribution", "original_source": ["hgnc", "loinc", "icd10", "snomedct", "uberon", "pato", "cl", "doid", "obi", "obib", "edam", "hsapdv", "sbo", "mi", "chebi", "mp", "ordo", "uniprot", "uo", "mondo", "efo", "pgo", "gencode", "reactome", "hra", "hubmap", "sennet", "stellar", "dct", "clinvar", "connectivitymap", "hp", "mp", "msigdb", "wikipathways", "clingen", "string", "4dn", "erccrbp", "erccreg", "faldo", "glycordf", "glycocoo", "gtex", "kidsfirst", "lincs", "motrpac", "mw", "npo", "sckan", "disgenet", "biomarker", "opentargets"], "product_url": "https://ubkg-downloads.xconsortia.org/", "secondary_source": ["ubkg"]}, {"category": "GraphProduct", "description": "Ontology CSV files that can be imported into a neo4j instance to create a UBKG database. Requires UMLS API key to access.", "format": "csv", "id": "ubkg.csv", "name": "UBKG Ontology CSV Files", "original_source": ["hgnc", "loinc", "icd10", "snomedct", "uberon", "pato", "cl", "doid", "obi", "obib", "edam", "hsapdv", "sbo", "mi", "chebi", "mp", "ordo", "uniprot", "uo", "mondo", "efo", "pgo", "gencode", "reactome", "hra", "hubmap", "sennet", "stellar", "dct", "clinvar", "connectivitymap", "hp", "mp", "msigdb", "wikipathways", "clingen", "string", "4dn", "erccrbp", "erccreg", "faldo", "glycordf", "glycocoo", "gtex", "kidsfirst", "lincs", "motrpac", "mw", "npo", "sckan", "disgenet", "biomarker", "opentargets"], "product_url": "https://ubkg-downloads.xconsortia.org/", "secondary_source": ["ubkg"]}, {"category": "MappingProduct", "description": "Concept mappings between different terminology systems", "format": "csv", "id": "athena.mappings", "name": "Athena Concept Mappings", "original_source": ["snomedct", "icd10", "icd10cm", "mesh", "loinc", "cdiscvocab", "ciel"], "product_url": "https://athena.ohdsi.org/search-terms/start", "secondary_source": ["athena"], "warnings": ["File was not able to be retrieved when checked on 2025-12-09_ Error connecting to URL_ Exceeded 30 redirects.", "File was not able to be retrieved when checked on 2025-12-08_ Error connecting to URL_ Exceeded 30 redirects."]}], "publications": [{"id": "https://doi.org/10.1093/nar/gkad1044", "journal": "Nucleic Acids Research", "preferred": true, "title": "LOINC 2024 update: advancing global interoperability for health measurements and observations", "year": "2024"}, {"id": "https://doi.org/10.1093/nar/gkac998", "journal": "Nucleic Acids Research", "title": "LOINC 2023 update: refining identifiers and expanding clinical content", "year": "2023"}], "taxon": ["NCBITaxon:9606"], "warnings": ["LOINC downloads and API require a free account; ensure you cite the specific version (e.g., 2.81) when using the terminology."]}