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A team that designed a correction may naturally expect its solution to work. An independent perspective can reveal a misleading effectiveness measure. The purpose is not to collect a second signature, but to challenge the claim with evidence that could genuinely show its limitations.
Scope of the decision
Independence does not always require another organisation. Relevant considerations include distance from implementation, suitable competence and access to evidence. Examine how the process behaves when problematic conditions recur, rather than checking only that a revised procedure has been issued and acknowledged.
Worked review
For example, a new check addresses incorrect sample labels. The implementation team presents ten correct labels as evidence of success. An independent reviewer also asks about busy shifts and reprinted labels. Those conditions have not been tested, so the effectiveness conclusion is limited and additional appropriate observation is planned.
Practical checks
- Identify conditions that could disprove the proposed solution before reviewing results.
- Check that evidence selection includes more than easy or problem-free examples.
- Record the reviewer’s role, competence and limits of assessment.
Acceptance and limits
Acceptance requires adequate evidence under relevant risk conditions and an explanation of uncertainty. An independent signature cannot repair an inadequate sample. If verification remains incomplete, distinguish implementation completed from effectiveness demonstrated and continue the necessary oversight.
Frequently asked questions
- Must the reviewer repeat every record check?
- No. Scope should reflect risk and the solution claim; the aim is to challenge evidence quality.
- Does a negative result mean the entire CAPA failed?
- It may reveal a limitation that should inform further assessment and improvement.