Which factor determines the retention period for study records?

• A. Investigator preference
• B. Sponsor and regulatory requirements
• C. Study location
• D. Data volume

Answer: (B)

Retention periods for study records are set by the rules that regulate clinical trials and by the sponsor’s policies. This ensures that essential documents remain accessible for regulatory inspections, safety reviews, and potential audits for the required length of time. Investigator preference does not determine how long records must be kept. The study’s location can influence which regulations apply, but the retention period itself comes from the applicable regulatory framework and the sponsor’s SOPs, which often specify a minimum duration. Data volume doesn’t dictate how long records must be retained; it affects storage considerations, not the legal retention timeframe. Therefore, the governing factor is the sponsor and regulatory requirements.