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    CAPA Effectiveness Check

    Verification step confirming a corrective or preventive action actually fixed the problem.

    Reviewed by Christian Espinosa, Founder, Blue Goat CyberLast reviewed May 5, 2026

    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.
    What the regulation says
    Regulators emphasize effectiveness checks as a critical component of a robust CAPA process. For instance, the FDA's 21 CFR 820.100(a)(7) requires verification of effectiveness for corrective and preventive actions. Similarly, ISO 13485:2016 clause 8.5.2 and 8.5.3 mandates verification that the corrective or preventive action does not adversely affect the conformity to requirements or the safety and performance of the medical device.

    What this means in practice

    Closing CAPAs without an effectiveness check is one of the most common QSR/ISO 13485 audit findings. Effectiveness data should be quantitative wherever possible.

    Examples

    • After a CAPA to redesign a sterile barrier, an effectiveness check involves monitoring packaging integrity test results over six months to demonstrate reduced integrity failures.
    • For a software bug fix CAPA, the effectiveness check might include re-running all affected test cases, analyzing user complaint data for a specified period, and monitoring system logs for recurrence of the error.
    • Following a CAPA addressing personnel training deficiencies, the effectiveness check could involve competency assessments, observed performance, and review of quality records for errors related to the previous training gap over a quarter.
    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.

    Frequently asked questions

    The primary purpose is to objectively confirm that the implemented corrective or preventive action has successfully eliminated the identified root cause and prevented recurrence of the nonconformity or undesirable situation.

    Cross-references

    Follows

    Comes after in a typical workflow or lifecycle.

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    Primary references

    3 sources
    Link health: 3 verified· last checked 2026-06-20
    FDA·1ISO·1AAMI·1
    1. 1
      FDA - Quality Systems
      Verified
      FDAfda.gov
    2. 2
      ISO 13485 Standard Page
      Verified
      ISOiso.org
    3. 3
      AAMI - Quality Systems Resources
      Verified
      AAMIaami.org

    Inline markers like [1] jump to the matching reference above.