Which statement best describes deviation management in GMP?

• A. Deviations should be documented but not investigated.
• B. Deviations are to be handled by production management alone.
• C. Deviations should be documented, but only minor ones require action.
• D. Deviations should be documented, investigated, corrective actions implemented, and effectiveness verified.

Answer: (D)

Deviation management in GMP means treating any departure from approved procedures or specifications as a risk to product safety and quality, and handling it through a full CAPA cycle. The best approach requires four linked steps: document the deviation so there’s a traceable record; investigate to determine the root cause and potential impact; implement corrective actions to address the root cause and prevent recurrence; and verify the effectiveness of those actions to confirm the issue is resolved and controls are working.

Documentation alone doesn’t prevent recurrence, because the root cause and risks remain unknown. Relying on production management alone can miss systemic quality issues and broader responsibilities of the quality system. Treating only minor deviations as needing action risks letting problems grow; every deviation should be evaluated and managed to maintain safety and compliance.