Proficiency Testing Providers
ISO/IEC 17043
Proficiency testing providers organize interlaboratory comparison programmes that help participants evaluate their performance and identify opportunities for improvement. GTAF accreditation focuses on the provider’s competence, programme design, statistical evaluation, confidentiality and reporting processes.
Competence, impartiality and confidence
GTAF’s accreditation approach is designed to provide a structured, evidence-based evaluation of organizations performing conformity assessment activities. The emphasis is on technical competence, impartiality, consistent processes and confidence in results or certification decisions.
Programme design
Appropriate planning, measurands, participant instructions, sample or item preparation and scheduling.
Technical competence
Competent personnel and suitable facilities, methods and technical resources.
Statistical evaluation
Appropriate statistical approaches for assigned values, performance evaluation and interpretation.
Confidentiality and reporting
Secure participant information, controlled results and clear technical reports.
Define the scope with precision
The accreditation scope should clearly describe the activities, sectors, methods, schemes or technical fields for which competence is demonstrated.
- Laboratory proficiency testing
- Testing and measurement programmes
- Interlaboratory comparison programmes
- Sector-specific proficiency testing schemes
Evidence that supports reliable outcomes
Assessment considers the organization’s documented arrangements and their effective implementation. Depending on the programme and scope, evidence may include:
- Competent personnel and defined responsibilities
- Controlled procedures, records and technical methods
- Suitable facilities, equipment and resources
- Impartiality and confidentiality controls
- Quality assurance, monitoring and continual improvement
- Effective handling of complaints, appeals or feedback where applicable
A clear path from application to surveillance
The detailed sequence is tailored to the programme and requested scope, while maintaining a consistent accreditation decision framework.
Programme
Programme and scope review
Technical
Technical and statistical resource assessment
Assessment of provider operations
Assessment of provider operations
Corrective action review
Corrective action review
Accreditation decision
Accreditation decision and surveillance
Frequently asked questions
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