ISO/IEC 17025 Accredited vs Non-Accredited Laboratory
ISO/IEC 17025 is the international standard for testing and calibration laboratory competence. Accreditation to it is granted by national accreditation bodies — and it applies to specific methods, not to the laboratory as a whole.
What accreditation tells you
- An independent body has assessed the laboratory's competence for the methods on its scope
- The laboratory operates a quality system covering equipment, calibration, staff competence and reporting
- Results for scoped methods carry recognition through international mutual recognition arrangements
What it does not tell you
- That every test the laboratory offers is accredited — only the methods on the scope are
- That the laboratory is the best fit for your industry or application
- Anything about price, turnaround or service quality
When accredited results are typically required
- A customer, specification or contract calls for accredited testing
- Regulatory submissions where the authority expects accredited data
- Certification schemes and product approvals
When non-accredited may be appropriate
Exploratory R&D, internal screening, method development and failure triage often do not need accredited reports. Some specialised methods have no accredited providers at all. The key is to decide consciously, not by default.
Common questions
- How do I check whether my method is on a laboratory's scope?
- Ask the laboratory for its scope of accreditation, or look it up on the accreditation body's public directory. Confirm the method and edition match your requirement.
- Is ISO 9001 certification the same thing?
- No. ISO 9001 is a general quality-management certification; ISO/IEC 17025 specifically assesses technical competence to produce valid test results.