For a medical laboratory, quality, accuracy, and reliable patient results are essential. ISO 15189 Accreditation provides a structured framework for demonstrating that a medical laboratory operates with competence, consistency, and effective quality management. For laboratories preparing for accreditation for the first time, understanding the requirements and laboratory accreditation process can make the journey much easier.
This guide explains the key stages involved in ISO 15189 Accreditation, the importance of ISO 15189:2022, and how laboratories can prepare for a successful assessment.
What Is ISO 15189 Accreditation?
ISO 15189 is an international standard specifically designed for medical laboratories. It combines requirements for a laboratory’s quality management system with requirements for technical competence.
ISO 15189:2022 is the current edition of the standard and focuses on areas such as:
Quality management and laboratory operations
Personnel competence
Equipment and infrastructure
Examination processes
Sample collection and handling
Method verification and validation
Internal quality control
Risk management
Reporting of laboratory results
Management of nonconformities
Continual improvement
For a laboratory, accreditation against ISO 15189 demonstrates that its processes are controlled and that it has established systems to produce technically valid and reliable results.
Why Is ISO 15189:2022 Important for Medical Laboratories?
Medical laboratory results can directly influence diagnosis, treatment, and patient management. A well-implemented quality system therefore needs to cover more than documentation.
ISO 15189:2022 places strong emphasis on risk-based thinking, patient-focused laboratory services, competence, and consistent examination processes. Implementing these requirements can help laboratories reduce errors, improve traceability, strengthen documentation, and establish greater confidence in test results.
This makes medical lab accreditation valuable not only for compliance but also for improving laboratory performance.
Who Needs Clinical Lab Accreditation?
Clinical lab accreditation is relevant to laboratories performing medical examinations and diagnostic testing. Depending on their activities, laboratories may include:
Pathology laboratories
Clinical chemistry laboratories
Hematology laboratories
Microbiology laboratories
Molecular diagnostic laboratories
Immunology laboratories
Histopathology laboratories
Hospital-based medical laboratories
Independent diagnostic laboratories
In India, laboratories seeking clinical laboratory accreditation in India should understand the applicable requirements, identify an appropriate accreditation route, and prepare their management and technical systems before assessment.
ISO 15189 Accreditation vs Other Laboratory Accreditation
One common mistake among new applicants is assuming that every laboratory follows the same accreditation standard.
Different laboratory activities may require different standards. For example:
Therefore, testing lab accreditation, medical device testing lab accreditation, and calibration lab accreditation should not be treated as identical to medical laboratory accreditation.
The applicable standard depends on the nature and scope of the laboratory's activities.
Understanding Accreditation Bodies for Medical Laboratories
An accreditation body evaluates whether a laboratory meets the relevant international standard and has the competence required for its defined scope.
When comparing accreditation bodies for medical laboratories, laboratories should consider factors such as:
Applicable accreditation standard
Accreditation scope
Assessment methodology
Recognition arrangements
Technical competence of assessors
Accreditation procedures
Surveillance and reassessment requirements
Transparency of the accreditation process
Selecting the appropriate accreditation body is an important early decision because it influences how the application and assessment process will be managed.
The Laboratory Accreditation Process: Step by Step
For first-time applicants, the laboratory accreditation process can be divided into several practical stages.
1. Understand the Standard
Begin by studying ISO 15189:2022 and identifying which requirements apply to your laboratory's activities.
Do not treat the standard as a documentation exercise. The objective is to establish processes that work effectively in day-to-day laboratory operations.
2. Define the Scope
The laboratory should clearly define the examinations and activities for which accreditation is being requested.
A properly prepared scope helps determine the required personnel, equipment, methods, quality controls, facilities, and technical records.
3. Conduct a Gap Assessment
Compare the laboratory's existing practices against ISO 15189:2022 requirements.
A gap assessment can identify areas requiring improvement, such as:
Missing procedures
Incomplete records
Personnel competency gaps
Equipment management issues
Quality control weaknesses
Method verification or validation requirements
Risk management gaps
Inadequate document control
Addressing these gaps before formal assessment can significantly improve preparedness.
4. Establish the Quality Management System
The laboratory should develop and implement a practical quality management system.
This may include procedures and records covering document control, personnel, equipment, purchasing, sample management, examination processes, quality indicators, nonconformities, corrective actions, internal audits, management reviews, and continual improvement.
The system should reflect actual laboratory activities rather than simply creating documents for assessment purposes.
5. Demonstrate Technical Competence
Documentation alone is not enough for accreditation.
The laboratory needs to demonstrate that personnel are competent, equipment is appropriately managed, examination methods are suitable, and results are supported by appropriate quality control and technical evidence.
Where applicable, laboratories should also address method verification or validation, measurement uncertainty, reference materials, proficiency testing, and traceability.
6. Implement Internal Audits
Internal audits help determine whether the laboratory's management and technical processes are being followed effectively.
Audits should cover relevant requirements and laboratory activities. Findings should be documented, investigated, and addressed through appropriate corrective actions.
7. Conduct Management Review
Management review provides an opportunity to evaluate the effectiveness of the laboratory's quality system.
The review may consider audit results, complaints, quality indicators, nonconformities, corrective actions, risks, resources, personnel performance, and opportunities for improvement.
8. Apply for Accreditation
Once the laboratory has implemented the required systems and believes it is ready, it can submit its application and supporting information to the selected accreditation body.
The accreditation body then reviews the application and plans the assessment according to its procedures.
9. Prepare for Assessment
Assessors evaluate both the documented management system and actual laboratory practices.
They may review records, interview personnel, observe activities, examine equipment and facilities, and evaluate technical processes within the proposed scope.
10. Address Nonconformities
If nonconformities are identified, the laboratory needs to investigate their causes and implement suitable corrective actions.
Simply correcting an individual error may not be sufficient. The laboratory should determine why the problem occurred and take steps to prevent recurrence.
11. Accreditation Decision
After completion of the assessment and closure or satisfactory resolution of applicable findings, the accreditation body proceeds according to its decision-making process.
Once accreditation is granted, the laboratory must continue maintaining its management system and technical competence.
Also read : ISO 15189 Accreditation for Medical Laboratories: Why the Right Accreditation Partner Matters
Common Challenges for First-Time Applicants
New laboratories often face challenges because they focus heavily on documentation while overlooking implementation.
Common issues include:
Procedures that do not match actual practices
Insufficient staff competency records
Poor equipment maintenance documentation
Incomplete quality-control records
Weak internal audit programs
Inadequate corrective-action investigations
Unclear accreditation scope
Incomplete method verification or validation
Poor risk management
Lack of management involvement
A successful medical lab accreditation program requires active participation from laboratory management and technical personnel.
How FDASIndia Can Support Your Accreditation Journey
For laboratories preparing for ISO 15189 Accreditation, having a clear implementation strategy can make the process more organized and manageable.
FDASIndia operates as an accreditation body for laboratories and follows a management system aligned with ISO/IEC 17011:2017. Its accreditation activities cover relevant laboratory accreditation requirements, including medical laboratories under ISO 15189 and testing and calibration laboratories under applicable standards.
FDASIndia became an APAC MRA Signatory in June 2023 and an ILAC MRA Signatory in August 2023 for testing and calibration laboratory accreditation.
For organizations exploring accreditation bodies for medical laboratories, understanding the applicable standard, scope, assessment requirements, and accreditation pathway is an important first step.
Final Thoughts
Starting the ISO 15189 journey does not have to be overwhelming. By understanding ISO 15189:2022, defining the correct scope, implementing a practical quality management system, demonstrating technical competence, and preparing systematically for assessment, a medical laboratory can build a stronger foundation for accreditation.
Whether you are planning clinical laboratory accreditation in India, upgrading an existing quality system, or applying for ISO 15189 Accreditation for the first time, proper preparation can help reduce avoidable gaps and make the accreditation journey more structured.
Ready to begin your ISO 15189 journey? Contact FDASIndia for guidance on medical laboratory accreditation and the accreditation process.
