Which of the following best describes contemporaneous data recording in GLP?

• A. Data recorded at the time of observation or as close as possible to it
• B. Data recorded after final analysis
• C. Data recorded in a separate database
• D. Data recorded years later

Answer: (A)

Contemporaneous data recording means capturing observations at the moment they occur or as close to that moment as possible. This practice preserves the exact context of the measurement—the equipment status, environmental conditions, date and time, and the operator’s observations—so the data reflects what was actually seen, not what someone recalls later. Recording data without delay reduces memory errors, bias, and the opportunity to alter entries after the fact, all of which could compromise data integrity. In GLP, this immediacy supports traceability and auditability, making it easier to verify how and when data were observed and recorded, and to reconstruct the study if needed. While other options describe where or when data might be stored or analyzed, they don’t address the critical aspect of timing, which is fundamental to reliable, defensible data under GLP. So, documenting data as observation occurs, or as soon as possible afterward, best meets the standard for maintaining accurate and trustworthy records.