ISO 15189:2022
Medical laboratories — Requirements for quality and competence
Standard Introduction
ISO 15189:2022 is the international standard specifying requirements for quality and competence in medical laboratories. Published in December 2022 as the fourth edition, it provides the definitive framework for laboratory accreditation worldwide. The standard covers the entire examination process from pre-analytical sample handling through analysis to post-analytical reporting, ensuring reliable results that support clinical decision-making.
The 2022 revision introduces a risk-based approach consistent with other ISO management system standards, enhanced requirements for laboratory information systems, and strengthened focus on patient safety and clinical outcomes. ISO 15189 accreditation is recognized by accreditation bodies worldwide through the International Laboratory Accreditation Cooperation (ILAC) mutual recognition arrangement. The standard is used by clinical laboratories in pathology, hematology, clinical chemistry, microbiology, immunology, and genetics.
Laboratory Quality System
Establishes comprehensive requirements for quality and competence specific to medical laboratories, covering pre-examination, examination, and post-examination processes.
Risk-Based Approach
The 2022 edition introduces an enhanced risk-based approach aligned with ISO 9001 and ISO/IEC 17025, requiring laboratories to identify and manage risks to impartial and valid results.
Patient-Centered Focus
Strengthened emphasis on patient welfare, clinical outcomes, and laboratory contribution to patient care pathways.
list_alt Core Requirements
- Impartiality and confidentiality
- Personnel competence and authorization
- Equipment management and metrological traceability
- Pre-examination process control (sample collection, handling)
- Examination procedures validation and verification
- Post-examination result reporting and interpretation
- Quality management system and continual improvement
- Risk management throughout the examination process
Who Needs to Comply?
Medical laboratories (clinical chemistry, hematology, microbiology, immunology, pathology, genetics, point-of-care testing) seeking accreditation to demonstrate competence and reliable results for patient care.
Key Requirements
Personnel Competence
Ensure laboratory personnel are qualified, trained, and authorized to perform specific examination procedures. Maintain competence records and conduct ongoing competency assessments.
Equipment & Metrological Traceability
Calibrate and maintain equipment, ensure metrological traceability of measurement results to SI units or certified reference materials, and validate measurement uncertainty.
Examination Process Validation
Validate or verify all examination procedures before use. Establish measurement uncertainty for quantitative examination procedures and define clinically relevant performance specifications.
Quality Assurance Program
Implement internal quality control and participate in external quality assessment (proficiency testing) programs. Monitor and evaluate the quality of examination results systematically.
Pre- and Post-Examination Processes
Control sample collection, transport, and preparation. Ensure accurate, timely, and clinically useful reporting of results with appropriate reference intervals and interpretive comments.
Implementation Roadmap
Prepare scope, ownership and obligations
Define the medical laboratory quality and competence program scope across medical laboratory management systems, personnel competence, examination processes, equipment, reagents, pre-examination and post-examination activities, POCT, and patient result reporting. Assign accountable owners, identify applicable legal, customer, certification, or regulatory drivers, and agree how evidence will be governed.
Gap analysis and risk prioritisation
Assess current practices against ISO 15189 expectations and risk context. Review impartiality, competence, quality management, examination validation, equipment control, metrological traceability, sample handling, result quality, nonconformities, and patient safety, then prioritize gaps by legal exposure, safety or consumer impact, customer impact, operational dependency, and review readiness.
Implement controls, records and reporting
Deploy required controls, operating processes, documentation, supplier or partner workflows, testing, reporting, and escalation paths. Build traceable evidence around competence records, method validation files, equipment calibration records, quality control results, EQA or proficiency testing, sample handling logs, result review records, nonconformity reports, and management reviews.
Review, audit and keep current
Complete readiness reviews, internal checks, and corrective actions before the accreditation assessment. Refresh the program after product, service, supplier, technology, legal, market, incident, or regulator changes.
Compliance Checklist
checklist Scope and accountability
checklist Controls and evidence
checklist Monitoring and improvement
Penalties & Enforcement
No direct legal penalties — ISO 15189 is a voluntary accreditation standard. However, many national health systems and regulatory bodies require ISO 15189 accreditation for laboratory services. Loss of accreditation can result in inability to provide services to hospitals and healthcare systems.
Frequently Asked Questions
Who needs ISO 15189?
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ISO 15189 is relevant for organizations whose products, services, systems, or regulated activities fall within medical laboratory management systems, personnel competence, examination processes, equipment, reagents, pre-examination and post-examination activities, POCT, and patient result reporting. It is commonly driven by regulation, customers, certification, market access, or assurance needs.
What is the main purpose of ISO 15189?
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The practical purpose is to create a repeatable program for impartiality, competence, quality management, examination validation, equipment control, metrological traceability, sample handling, result quality, nonconformities, and patient safety. The program should make obligations visible, define accountable owners, operate controls, and keep evidence current.
What should be done first?
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Start by confirming scope, ownership, and applicable obligations. This prevents teams from building documents or controls that do not match the actual product, service, system, or regulated activity.
How long does implementation take?
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A focused implementation can take several weeks or months. Timing depends on maturity, number of sites or systems, supplier involvement, technical complexity, testing needs, and external review depth.
What evidence is most useful?
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Useful evidence includes competence records, method validation files, equipment calibration records, quality control results, EQA or proficiency testing, sample handling logs, result review records, nonconformity reports, and management reviews. Reviewers usually expect traceable evidence that connects obligations to decisions, controls, tests, reports, and corrective actions.
How should suppliers or partners be managed?
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Supplier and partner duties should be documented through contracts, onboarding requirements, data or evidence requests, performance monitoring, and escalation routes for findings, incidents, or changes.
When should the program be updated?
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Update the program after legal changes, product or service changes, supplier changes, new markets, incidents, complaints, regulator feedback, or audit findings. Stale evidence is a common compliance failure.
Can this be integrated with other programs?
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Yes. ISO 15189 can usually share governance, document control, training, supplier management, issue tracking, risk management, internal review, and corrective-action workflows with adjacent compliance programs.
Official Documentation
ISO 15189:2022
External Link • iso.org • Standard Purchase Page
Online Browsing Platform
External Link • iso.org • Official Preview
Laboratory Accreditation Resources
External Link • ilac.org • ILAC Mutual Recognition