Last Updated on December 23, 2025 by Melissa Lazaro

Why a 90-Day ISO/IEC 17043 Implementation Plan Works

• Brief credibility statement
  • Hands-on experience supporting PT providers through first-time accreditation and transitions
  • Direct involvement in designing PT schemes, statistics workflows, and management systems aligned with ISO/IEC 17043
• The real problem most PT providers face
  • Overcomplicating implementation
  • Losing time on documentation before processes are stable
  • Not knowing what auditors expect at each stage
• What readers will gain from this guide
  • A clear, week-by-week 90-day implementation roadmap
  • Practical priorities instead of theory
  • Confidence that nothing critical is missed before assessment

Days 1–30: ISO/IEC 17043 Gap Analysis & Implementation Planning Foundations

ISO/IEC 17043 Gap-Analysis Checklist and Scope Definition

• How to confirm whether your organization truly falls within ISO/IEC 17043 scope
• Practical way to map current PT activities against Clauses 4–8
• What to assess first when time and resources are limited
• Common gap-analysis mistakes that slow implementation
• Pro tip: How to document gaps without triggering unnecessary corrective actions

ISO/IEC 17043 Project-Plan Template and 90-Day Timeline Setup

• Turning gap-analysis results into a realistic project plan
• How to sequence tasks so documentation supports operations, not the other way around
• Assigning responsibilities without overwhelming small teams
• What auditors expect to see in an implementation plan
• Pro tip: How to show control even if some tasks extend beyond 90 days

Days 31–60: ISO/IEC 17043 Process Implementation & Operational Controls

Designing ISO/IEC 17043-Compliant PT Schemes

• Translating Clause 7 requirements into practical PT scheme workflows
• Defining objectives, measurands, and performance criteria clearly
• Managing homogeneity and stability activities proportionately
• Common pitfalls when reusing legacy PT designs
• Pro tip: How to demonstrate technical validity without over-engineering

ISO/IEC 17043 Statistical Methods and Data-Analysis Controls

• Selecting appropriate statistical methods for PT evaluation
• Ensuring consistency between scheme design and statistical evaluation
• Managing outliers, assigned values, and uncertainty explanations
• One brief real-world example showing how weak statistical justification leads to audit findings
• Pro tip: How to document statistical rationale so auditors don’t challenge competence

Days 61–75: ISO/IEC 17043 Management System & Documentation Control

ISO/IEC 17043 Management-System Structure (Option A or B)

• Choosing the right management-system option based on organizational maturity
• Aligning policies, objectives, and processes with PT operations
• Avoiding copy-paste quality manuals that don’t reflect reality
• Pro tip: How to keep documentation lean while remaining compliant

Document Control, Records, and Data Integrity for PT Providers

• What documents must exist before assessment
• What can still be “under development” if justified
• Managing electronic records, PT data, and version control
• Common document-control nonconformities and how to prevent them

Days 76–85: ISO/IEC 17043 Competence, Training & Internal Audit

ISO/IEC 17043 Training for PT Staff and Statisticians

• Defining competence requirements by role
• Training that auditors expect to see vs. training that adds no value
• Demonstrating statistical competence without formal degrees
• Pro tip: How to use experience-based evidence effectively

ISO/IEC 17043 Internal Audit and Management Review Readiness

• Timing internal audits correctly within a 90-day plan
• What to audit first when systems are newly implemented
• Using internal audits to strengthen confidence, not just tick boxes
• Preparing management review inputs that align with Clause 8 expectations

Days 86–90: ISO/IEC 17043 Pre-Assessment Readiness & Final Checks

Final ISO/IEC 17043 Readiness Review Before Accreditation Assessment

• Conducting a focused pre-assessment self-review
• Verifying alignment between practice, records, and procedures
• Ensuring staff can explain processes confidently
• Pro tip: How to handle known weaknesses transparently

Integrating ISO/IEC 17043 with ISO/IEC 17025 and ISO 9001 Systems

• Leveraging existing ISO 17025 and ISO 9001 controls efficiently
• Avoiding duplication of audits, documents, and records
• Showing auditors a coherent, integrated system
• Common integration mistakes that raise red flags

FAQs – Implementing ISO/IEC 17043 in 90 Days

Can ISO/IEC 17043 really be implemented in 90 days?

• Clear explanation of what “implemented” means in accreditation terms

What if some PT schemes are still under development?

• How to justify phased implementation without risking findings

Is ISO/IEC 17043 feasible for small or new PT providers?

• Practical perspective based on proportionality and risk

Conclusion – Your ISO/IEC 17043 90-Day Implementation Path Forward

• Key takeaways from the 90-day action plan
• Reinforcement of practical, experience-based approach to ISO/IEC 17043
• Clear next step
  • Start with a structured gap analysis and realistic project plan
  • Focus on operational control before perfect documentation