LOINC (Logical Observation Identifiers Names and Codes) is a universal standard maintained by the Regenstrief Institute for identifying clinical observations — primarily laboratory tests but also vital signs, imaging studies, and survey instruments. Each LOINC code identifies a specific observation (e.g. 'serum glucose, mass concentration, point in time, quantitative') along with the units of measure and the result type. The point of LOINC is that two lab systems can exchange a result and both know exactly what was measured, in what units, under what conditions — without bespoke mapping. LOINC is required by HL7 FHIR's Observation resource for lab results, by US Meaningful Use programmes, and by an increasing number of national EHR mandates. EMR vendors integrate LOINC by mapping each lab order in their formulary to the corresponding LOINC code, then transmitting the code alongside the result over HL7 / FHIR.

Solutions where loinc applies

Zeour solutions that operate on this layer.

MediCare Clinic

medicare · clinic · management · system

Zeour MediCare — the multilingual on-premise clinic and EMR management system for small-to-mid healthcare practices. Covers patients (records, allergies, conditions, medications, body diagrams), appointments + visits with SOAP notes, prescriptions with drug-interaction checks, lab orders + samples + results, billing + payments + invoicing, inventory, expenses, referrals, medical certificates, refill requests, patient communications, telemedicine (WebRTC), an AI clinical assistant (OpenAI-powered with 7 modes), a patient self-service portal, and a full role-based access model across Admin, Doctor, Reception, and Lab Tech roles. Engineered multilingual — (with full RTL) as the production baseline, extensible to any locale — and runs locally on a single server.

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Industries where this matters

Verticals where loinc is operationally critical.

Healthcare

Patient flow + clinical EMR, multilingual by engineering

Related terms

Adjacent definitions to read next.

EMR (Electronic Medical Records)

Healthcare & Clinical

A clinic's digital record of every patient encounter — vitals, history, notes, prescriptions, labs, attachments — owned by a single provider.

HL7 FHIR

Healthcare & Clinical

The current global standard for exchanging clinical data between healthcare systems — JSON / XML resources over a REST API.

ICD-10 / ICD-11

Healthcare & Clinical

The WHO's standard classification of diseases, signs, symptoms, and procedures — used for clinical coding, billing, and statistical reporting.

SNOMED CT

Healthcare & Clinical

A comprehensive clinical terminology covering diseases, findings, procedures, and body structures — finer-grained than ICD and increasingly required in mature EHR systems.

AI Clinical Assistant

Healthcare & Clinical

A side-pane AI in the EMR that summarises history, drafts notes from voice, suggests differential diagnoses, and flags drug interactions.

Clinic Management System

Healthcare & Clinical

The single platform that runs a clinic or hospital — EMR, appointments, billing, lab, radiology, pharmacy, patient portal, telemedicine and (in 2026) a bounded AI clinical assistant.

Clinical Decision Support (CDS)

Healthcare & Clinical

Software inside the EMR that surfaces evidence-based guidance — drug interaction warnings, screening reminders, differential diagnoses — at the point of care.

DICOM

Healthcare & Clinical

The international standard for storing, transmitting, and displaying medical images — every CT, MRI, X-ray, and ultrasound runs on it.

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