ISO/IEC 17043 – Proficiency Testing Providers
Introduction
ISO/IEC 17043 is the internationally recognized standard that specifies the requirements for the competence and consistent operation of organizations that provide proficiency testing (PT) schemes. Proficiency testing is a key tool for evaluating the performance of laboratories by comparing their results against predetermined criteria through interlaboratory comparisons.
For an accreditation body such as Universal Standards Assessment Forum, ISO/IEC 17043 provides the framework to assess and accredit proficiency testing providers. Accreditation to this standard demonstrates that a PT provider is capable of designing, operating, and managing proficiency testing schemes in a reliable, technically valid, and impartial manner.
The standard ensures that laboratories participating in PT programs receive accurate performance evaluation, which supports confidence in testing and calibration results and contributes to the overall quality infrastructure.
Key Requirements of ISO/IEC 17043
1. General Requirements
- Impartiality and independence in PT scheme operations
- Confidentiality of participant data and results
- Ethical conduct and avoidance of conflicts of interest
- Confidentiality of client and product information
2. Structural Requirements
- Defined legal status and organizational structure
- Clear roles and responsibilities
- Mechanisms to safeguard impartiality
3. Resource Requirements
- Competent personnel (technical experts, statisticians)
- Adequate facilities, equipment, and IT systems
- Access to reference materials and calibration services
- Control of subcontracted activities
4. Process Requirements
- Design and planning of PT schemes
- Selection and preparation of test items
- Homogeneity and stability testing
- Distribution of PT items to participants
- Data collection and statistical analysis
- Evaluation of participant performance
- Reporting of results
- Handling complaints and appeals
5. Management System Requirements
- Documented management system
- Internal audits and management reviews
- Corrective actions and continual improvement
- Risk-based thinking
Documentation Requirements
A proficiency testing provider must establish and maintain comprehensive documented information, including:
2. External Providers Records
3. Technical Documents
4. Personnel Records
5. Operational Records
6. Equipment and Material Records
7. Procedures
Accreditation Process for ISO/IEC 17043
For PT providers seeking accreditation from Universal Standards Assessment Forum, the process generally includes:
- Submission of application defining scope of PT schemes
- Provision of documented management system and technical procedures
- Assessment of policies, procedures, and PT scheme documentation
- Identification of gaps against ISO/IEC 17043 requirements
- On-site or remote assessment of facilities and operations
- Evaluation of implementation of management system
- Interviews with technical personnel
- Observation of PT scheme activities (sample preparation, analysis, reporting)
- Assessment of technical competence and statistical evaluation
- Identification of nonconformities
- Submission and verification of corrective actions
- Independent review and decision-making
- Granting of accreditation for defined PT schemes
- Periodic monitoring and reassessment
- Verification of continued compliance
- Full reassessment at defined cycle (typically 3–5 years)
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