What is a key outcome of documenting corrective actions after a QC failure?

• A. To measure instrument precision.
• B. To speed up future analyses.
• C. To provide traceability and evidence of remediation for QA audits.
• D. To hide the error from investigators.

Answer: (C)

Documenting corrective actions after a QC failure creates a complete, auditable record of how the issue was handled. The key outcome is traceability: you can show when the failure happened, what investigation was done, what root cause was identified, which corrective actions were taken, who approved them, and how verification or re-testing confirmed that the problem was resolved. This trail provides evidence for QA audits that the lab followed approved procedures, addressed the issue, and put measures in place to prevent recurrence, which is essential for regulatory compliance and overall quality assurance. It also supports future investigations and trend analysis, and helps keep standard operating procedures up to date when corrective actions reveal weaknesses.

Measuring instrument precision, for example, comes from calibration and validation activities, not from documenting corrective actions after a failure. While thorough remediation records can indirectly support faster confidence in future analyses, the primary benefit in a QA context is the traceable evidence of remediation. Hiding the error undermines QA and is not appropriate practice.