At Qinsite, we help laboratories and businesses navigate the critical yet often misunderstood world of decision rules – a fundamental component of reliable conformity assessment under ISO/IEC 17025:2017.
A decision rule is essentially your measurement quality control plan. It’s:
A predefined method for accounting for measurement uncertainty
Your framework for making consistent pass/fail determinations
The bridge between test results and conformity statements
As defined by ISO/IEC 17025:2017 (Clause 3.7), it’s the documented approach that answers: “How will we handle the natural variability in our measurements when declaring compliance?”
We help clients implement decision rules that are:
Tailored to your specific conformity assessment needs
Aligned with product/service criticality
Balanced between consumer and producer risks
Properly accounts for measurement uncertainty
Uses appropriate statistical methods
Documents clear acceptance criteria
Simple enough for daily use
Supported by proper training
Integrated with existing quality systems
Simple Acceptance
(No uncertainty consideration – high risk)
Guard Banding
(Conservative adjustment of limits)
Probability-Based
(Statistical confidence levels)
Shared Risk
(Balanced producer/consumer risk)
We emphasize that effective decision rules require:
Proactive lab-to-customer communication
Clear documentation of the chosen approach
Mutual understanding of associated risks
Rule Development – Creating customized decision frameworks
Implementation Support – Integrating rules into workflows
Training Programs – For both technical staff and customers
Compliance Audits – Verifying proper application
Decision rules transform measurement variability from a problem into a managed parameter. With Qinsite’s expertise, you can:
Make conformity decisions with known confidence levels
Reduce dispute frequency with customers
Demonstrate compliance with international standards
Professional advice from a compliance expert
Benefit from streamlined processes
Personalised advice, tailored to your business
Personalised advice, tailored to your business
Specialist help whenever you need it
Book a free 30-minute discovery call to learn more about how I can help your organisation.
