Quality & Risk
CAPA Effectiveness Check
In one line
Verification step confirming a corrective or preventive action actually fixed the problem.
Definition
An effectiveness check is a planned, objective evaluation performed after a CAPA action is implemented to confirm the action eliminated the root cause and the issue does not recur. Acceptance criteria and a defined timeframe are set in advance.
Good effectiveness checks use measurable criteria, such as no recurrence of the failure mode in a defined number of lots, a complaint rate below a threshold, or a process capability target, and are performed after enough time or volume to be meaningful. Closing a CAPA immediately after implementation, or checking only that training was completed, is a common inspection finding. If the check fails, the CAPA should be reopened or escalated.
Why it matters
Closing CAPAs without an effectiveness check is one of the most common QSR/ISO 13485 audit findings. Effectiveness data should be quantitative wherever possible.
Common pitfalls
- •Failing to establish objective, measurable acceptance criteria before implementing the CAPA can lead to subjective and undemonstrable effectiveness checks.
- •Closing a CAPA based on a short-term observation period without sufficient data to prove sustained effectiveness is a common pitfall.
- •Not linking the effectiveness check directly to the identified root cause and the specific problem statement can result in a check that doesn't truly validate the CAPA's success.
- •Confusing verification of implementation with verification of effectiveness often leads to inadequate CAPA closure.
- •Ignoring potential unintended adverse effects or new problems introduced by the CAPA while performing the effectiveness check can compromise device safety and performance.
Sources
- FDA - Quality Systems · FDA
- ISO 13485 Standard Page · ISO
- AAMI - Quality Systems Resources · AAMI