Recordkeeping: How long must records be maintained?

• A. Five years from the date of the last entry (logbooks) or retirement (SOPs, QA)
• B. One year
• C. Ten years
• D. Indefinitely

Answer: (A)

Retention duration for lab records is the concept being tested. The standard approach is to keep logbooks for five years from the date of the last entry, and to retain SOPs and QA records for five years after the document or process is retired. This schedule supports traceability and accountability: logbooks capture day-to-day activities and observations, so keeping them for five years gives enough time to address questions, audits, or investigations that may arise after the work is finished. For SOPs and QA records, retaining them for five years after retirement ensures that historical procedures and quality decisions remain accessible if there’s a need to review how past work was performed or to verify past results.

Why not shorter or longer terms? One year would be too brief to support most regulatory and quality investigations or audits. Ten years can be unnecessarily burdensome for many operations without providing a proportionate benefit, and keeping records indefinitely is impractical from a storage and management perspective. The five-year window is a balanced, commonly adopted baseline aligned with regulatory practice and quality system needs. Always refer to your organization’s specific policies or regulatory guidelines, but this five-year rule is a widely accepted standard.