Complete guide · Testing and calibration laboratories
ISO 17025 in Romania
The standard for the competence of testing and calibration laboratories: how to obtain RENAR accreditation, what it involves, and why it is the condition without which your results are not recognised.
What is ISO 17025?
ISO/IEC 17025 is the international standard for the competence of testing and calibration laboratories. It sets out the requirements through which a laboratory demonstrates that it operates competently and generates valid, technically sound and traceable results.
The current version is ISO/IEC 17025:2017. The standard covers both management requirements (impartiality, confidentiality, document control) and technical requirements (competence of personnel, equipment, methods, metrological traceability).
Unlike ISO 9001, a laboratory is not "certified" to ISO 17025 — it is accredited. In Romania, accreditation is granted by RENAR (the Romanian Accreditation Association), and it is what gives your results recognised value.
Why laboratories need ISO 17025 accreditation
For a laboratory, ISO 17025 accreditation is not an advantage — it is often the condition for existing in the market at all.
Official recognition
Results from an accredited laboratory are accepted by authorities, clients and courts
International recognition
Through the EA MLA / ILAC arrangements, RENAR accreditation is recognised across Europe
A tender requirement
Many contracts and permits explicitly require results from accredited laboratories
Metrological traceability
Guarantees that measurements are linked to national and international standards
Demonstrated impartiality
Structure and procedures that protect the validity and independence of results
Technical competence
Method validation and staff competence, verified by an external body
How ISO 17025 accreditation is obtained
Initial gap analysis
We assess the laboratory against ISO/IEC 17025:2017 — management and technical. We identify the gaps. Duration: 2–3 weeks.
The management system
We build the documentation: manual, impartiality procedures, control of documents and records.
Technical requirements
We validate the testing and calibration methods, establish metrological traceability, and qualify equipment and personnel.
Uncertainty estimation
We draw up the measurement uncertainty budgets for the methods within the accreditation scope.
Internal audit and comparisons
A full internal audit and participation in interlaboratory comparisons (proficiency testing) to demonstrate competence.
RENAR assessment
RENAR assesses the laboratory on site. Once the requirements are met, the accreditation certificate is granted.
What ISO 17025 accreditation costs
Cost depends heavily on the number of methods and fields included in the accreditation scope — each method requires its own validation, traceability and uncertainty. Indicative figures:
Narrow scope
Few methods, one field
EUR 8,000–13,000
Consultancy · accreditation preparation
Medium scope
Several related methods
EUR 13,000–20,000
Medium complexity
Broad scope
Many methods, diverse fields
EUR 20,000–35,000
Multiple validations
✅ Consultancy costs do not include the RENAR assessment and surveillance fees, which the accreditation body invoices separately. The accreditation scope — how many methods you include — is the main cost driver, and we size it together, realistically.
How long preparation for accreditation takes
Method validation and interlaboratory comparison are the stages that dictate the timeline. The average is 8–14 months, longer than certifying a management system.
Narrow scope
6–9 months
Few methods, equipment and staff already qualified, validation data available.
Standard
9–14 months
A laboratory building its system and validating several methods.
Broad
14–20 months
Wide scope, many validations and interlaboratory comparisons to schedule.
Frequently asked questions about ISO 17025
Is ISO 17025 certified or accredited?
It is accredited. This is the essential distinction: certification (as with ISO 9001) confirms that a management system conforms; accreditation confirms the technical competence to produce valid results. In Romania, accreditation is granted by RENAR, not by a certification body.
What is the accreditation scope?
It is the precise list of methods, test types or calibrations for which the laboratory is accredited. Accreditation is not blanket — you are accredited for exactly what you have demonstrated competence in, method by method. Extending the scope requires a further assessment.
What are interlaboratory comparisons?
These are tests in which several laboratories analyse the same sample and the results are compared. Taking part in proficiency testing is a requirement for demonstrating that your methods produce correct results, comparable with those of others.
How long does accreditation remain valid?
The accreditation certificate runs on a multi-year cycle, with periodic surveillance assessments by RENAR. Maintaining accreditation requires continued participation in comparisons and demonstration of competence over time.
How does it differ from ISO 15189?
ISO 17025 covers testing and calibration laboratories in general; ISO 15189 is the standard specific to medical laboratories. They are related in structure, but ISO 15189 has requirements adapted to the medical context.
Other ISO standards for your company
Verifiable credentials
IRCA Lead Auditor for integrated systems
CQI | IRCA certified courses, taken with RINA: ISO 9001, ISO 14001 and ISO 45001.
ISO 9001
ISO 14001
ISO 45001See the certificates →Do you want your laboratory accredited?
We prepare you for RENAR accreditation to ISO/IEC 17025 — from method validation to the final assessment. The first conversation is free.