CAPA Effectiveness Verification 2 — Questions and Answers
Question 1: What distinguishes effectiveness verification from implementation verification in a CAPA?
- Implementation verification confirms actions were completed; effectiveness verification confirms the problem was solved (Correct answer)
- They are the same activity performed at different times
- Effectiveness verification only applies to preventive actions, not corrective actions
- Implementation verification requires management approval while effectiveness verification does not
Correct answer: Implementation verification confirms actions were completed; effectiveness verification confirms the problem was solved
Implementation verification confirms the planned actions were executed, while effectiveness verification confirms those actions actually eliminated the root cause and prevented recurrence.
Question 2: A medical device company completed a CAPA for sterility failures. Which metric best demonstrates effectiveness?
- Number of CAPA tasks completed on time
- Zero sterility failures in 500 subsequent lots tested (Correct answer)
- Training completion rate for affected personnel
- Number of procedures updated after the CAPA
Correct answer: Zero sterility failures in 500 subsequent lots tested
Zero recurrence of the original failure mode in subsequent production is the most direct evidence that the corrective action eliminated the root cause.
Question 3: When should effectiveness criteria be defined in the CAPA process?
- After the corrective actions have been implemented
- During the initial CAPA planning phase, before implementation (Correct answer)
- Only after the first recurrence check shows no failures
- At the time of CAPA closure review
Correct answer: During the initial CAPA planning phase, before implementation
Effectiveness criteria must be defined upfront during planning so they are objective and not influenced by results observed after implementation.
Question 4: A CAPA was opened for excessive customer complaints about product labeling errors. What is the most appropriate effectiveness check timeframe?
- 24 hours after implementing label artwork controls
- After reviewing 1 complaint regardless of timeframe
- Following 3-6 months of production with zero labeling nonconformances (Correct answer)
- Immediately after retraining the labeling team
Correct answer: Following 3-6 months of production with zero labeling nonconformances
A sufficient observation period with zero recurrence of the original defect type provides statistically meaningful evidence of effectiveness.
Question 5: Which regulatory standard explicitly requires verification of CAPA effectiveness for medical device manufacturers?
- ISO 9001:2015
- 21 CFR Part 820.100 (Correct answer)
- ISO 14001
- OSHA 1910
Correct answer: 21 CFR Part 820.100
21 CFR Part 820.100 (FDA Quality System Regulation) requires manufacturers to verify or validate corrective and preventive actions to ensure they do not adversely affect the finished device and are effective.
Question 6: A CAPA effectiveness check reveals that the original problem recurred. What is the correct next step?
- Close the CAPA and open a new one for the recurrence
- Extend the monitoring period by 30 days
- Reopen or escalate the CAPA to reassess root cause analysis (Correct answer)
- Accept the result as statistical variation and close
Correct answer: Reopen or escalate the CAPA to reassess root cause analysis
Recurrence indicates the root cause was not fully identified or the corrective action was inadequate, requiring the CAPA to be reopened and the root cause analysis revisited.
Question 7: What does 'objective evidence' mean in the context of CAPA effectiveness verification?
- A written opinion from the quality manager confirming improvement
- Quantitative data or documented observations that demonstrate the problem no longer occurs (Correct answer)
- A signed statement from the process owner that actions were completed
- Customer feedback collected informally after the CAPA
Correct answer: Quantitative data or documented observations that demonstrate the problem no longer occurs
Objective evidence consists of verifiable data records, measurements, or documented observations that auditors can independently confirm, not subjective opinions.
CAPA Effectiveness Verification 2
What distinguishes effectiveness verification from implementation verification in a CAPA?