Which statement about QC records is most accurate?

• A. Only the most recent test results are kept
• B. All QC test results must be maintained
• C. No records are kept
• D. Only acceptance tests are kept

Answer: (B)

Maintaining a complete history of QC test results is essential because it lets you monitor equipment performance over time and confirm it stays within safe, acceptable limits. With the full record, you can spot gradual drift, verify consistency, and guide timely maintenance and calibration decisions. Regulators and QA programs expect documented evidence of ongoing QC activity, not just a single check. If you only keep the most recent result, you lose the context needed to detect trends or deteriorating performance. If no records are kept, there’s no way to demonstrate compliance or track reliability. If only acceptance tests are kept, routine performance checks that could reveal emerging issues are missed. Therefore, all QC test results should be maintained.