ISO/IEC 17025:2017 Audit Checklist
A clause-by-clause internal controls checklist for testing and calibration laboratories preparing for surveillance or reassessment audits. Covers every major requirement from Clauses 4 through 8.
"We used this checklist 60 days before our A2LA reassessment and closed 4 gaps we didn't know we had. Zero nonconformities on assessment day."
— Quality Manager, Environmental Testing Lab
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What's Inside the Checklist
Five comprehensive sections covering every auditable clause of ISO/IEC 17025:2017
Impartiality & Confidentiality
Clauses 4.1-4.2 — Verify your impartiality risk assessments are current and confidentiality agreements cover all personnel, including contractors and temps.
Equipment Management
Clause 6.4 — The #1 nonconformity area (38% of findings). Covers calibration programs, equipment records, intermediate checks, and tamper-evidence controls.
Measurement Uncertainty
Clause 7.6 — Ensure your uncertainty budgets include all significant contributors, not just calibration certificate values. Decision rules covered too.
Methods & Validation
Clause 7.2 — Verification vs. validation requirements, method selection, deviation procedures, and keeping method documentation current.
Internal Audits & Reviews
Clauses 8.8-8.9 — Audit programme scope, auditor independence, management review required inputs, and corrective action follow-through.
Top 10 Audit-Ready Actions
Short on time? A prioritized quick-reference of the 10 items assessors check most frequently, with the clause references you need.
Built Around Real Assessment Data
Every section is weighted by actual nonconformity frequency from accreditation body findings
38% of Nonconformities: Equipment
Clause 6.4 generates more findings than any other section. Missing calibration records, incomplete equipment logs, and absent tamper-evidence programs are the top issues.
#2 Finding: Measurement Uncertainty
Most labs only include calibration uncertainty in their budgets. Environmental influences, operator variability, and sample preparation are often ignored without justification.
Static Risk Registers Fail Audits
The 2017 revision replaced preventive action with risk-based thinking (Clause 8.5). Labs that create a risk register once and never update it get cited every time.
Decision Rules Now Required
Pass/fail statements without a documented decision rule that accounts for measurement uncertainty are a hard nonconformity under Clause 7.8.6.
Who This Checklist Is For
Quality Managers
Lab quality managers and quality assurance officers preparing for surveillance audits, reassessments, or initial accreditation to ISO/IEC 17025:2017.
Lab Directors
Technical directors and laboratory managers responsible for ensuring competence, valid results, and compliance across testing and calibration operations.
Internal Auditors
Internal audit teams needing a comprehensive reference to evaluate management system conformity and identify gaps before the accreditation body does.