Usage Examples
- The batch failure investigation closed with three corrective actions and one preventive action across two sites.
- We cannot close the CAPA until the effectiveness check clears the next three commercial batches.
- The auditor pulled the CAPA log and went straight to the records that had been open longest.
What is CAPA (Corrective and Preventive Action)?
CAPA is the quality-system element that investigates a detected problem to root cause and eliminates that cause so it cannot recur, unlike a correction, which only fixes the affected batch.
CAPA exists because fixing the affected batch does not stop the next one from failing. 21 CFR 211.192 obliges the quality control unit to investigate any unexplained discrepancy or specification failure thoroughly, whether or not the batch was already distributed, and to record conclusions and follow-up. CAPA is the machinery that turns that investigation into a change that holds.
CAPA covers the actions arising from complaints, product rejections, non-conformances, recalls, deviations, audits, regulatory inspections and findings, and trends from process performance and product quality monitoring. CAPA stops where the correction starts: reworking, rejecting or recalling the affected material is a correction, not a corrective action. Planned improvements you initiate yourself belong to change management, which CAPA outputs feed.
CAPA is applied through a structured investigation whose objective is the root cause, with effort, formality and documentation scaled to risk in line with ICH Q9. CAPA then requires implementation, an evaluation of whether the actions worked, and escalation: management review assesses the effectiveness of changes arising from CAPA, and the CAPA process itself is a quality-system performance indicator.
Not to be confused with
- Correction
- a correction removes the detected non-conformity itself: rework the batch, reject the lot, recall the units. Corrective action eliminates the cause of that non-conformity. A closed correction with no corrective action leaves the failure mode live.
- Deviation
- a deviation is an event; CAPA is the system that responds to it. ICH Q10 lists deviations as one of eight CAPA inputs, alongside complaints, rejections, non-conformances, recalls, audits, inspection findings and monitoring trends. A CAPA log fed only by deviations is under-scoped.
- Change control
- change management evaluates and approves changes before they are made. CAPA generates changes as an output of investigation. ICH Q10 treats them as separate elements that hand off to each other, not as one workflow.
- Root cause analysis
- root cause analysis is the investigative step inside CAPA. ICH Q10 requires a structured approach with the objective of determining root cause but names no specific technique, and RCA alone discharges nothing: implementation and effectiveness evaluation are the rest of the obligation.
21 CFR 211.192 is enforceable US law for finished pharmaceuticals; the ICH Q10 items are the harmonised expectations a pharmaceutical quality system is inspected against.
What you must do
- 1Have the quality control unit review and approve all drug product production and control records, including packaging and labeling, before a batch is released or distributed21 CFR 211.192
- 2Thoroughly investigate any unexplained discrepancy or specification failure whether or not the batch has been distributed, extend the investigation to other batches and products that may have been associated, and keep a written record of the conclusions and follow-up21 CFR 211.192
- 3Operate a system for implementing corrective and preventive actions arising from complaints, product rejections, non-conformances, recalls, deviations, audits, regulatory inspections and findings, and monitoring trendsICH Q10 3.2.2
- 4Use a structured investigation aimed at determining root cause, with effort, formality and documentation commensurate with the level of risk, in line with ICH Q9ICH Q10 3.2.2
- 5Assess the effectiveness of process and product changes arising from corrective and preventive actions at management reviewICH Q10 3.2.4
- 6Monitor the CAPA process itself as a performance indicator of quality-system effectiveness, alongside complaint, deviation and change management processesICH Q10 4.1
Common mistakes
Closing the CAPA once the batch is fixed
reworking or rejecting the affected material is a correction. ICH Q10 defines corrective action as action to eliminate the cause. Close on the correction and the same discrepancy reappears in later batch records, which is exactly the pattern an investigator reads a CAPA log to find.
Scoping the investigation to the one batch that failed
21 CFR 211.192 requires the investigation to extend to other batches and other products that may have been associated with the failure. A single-batch investigation understates the exposure and forces a second, wider investigation later, usually under inspection pressure and with distributed product at stake.
Measuring CAPA by closure time instead of effectiveness
an on-time-closure metric proves administrative throughput, nothing more. ICH Q10 expects the effectiveness of actions to be evaluated and fed into management review. Without an effectiveness check tied to real data, a closed CAPA is an assertion that the cause is gone, not evidence of it.
When This Matters
- The batch failure investigation closed with three corrective actions and one preventive action across two sites.
- We cannot close the CAPA until the effectiveness check clears the next three commercial batches.
- The auditor pulled the CAPA log and went straight to the records that had been open longest.
Frequently Asked Questions
Corrective action eliminates the cause of a non-conformity that has already been detected, so it cannot recur; preventive action addresses a potential cause so the problem never occurs at all. ICH Q10's glossary takes both definitions from ISO 9000:2005: corrective action prevents recurrence, preventive action prevents occurrence.
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