#electronic source

eSource in clinical trials involves capturing data directly in electronic format at its source. This approach reduces errors associated with manual transcription, accelerates data availability for sponsors and monitors, and preserves a clear, auditable record. By supporting secure access and adherence to regulatory standards, eSource enables more transparent, efficient, and well-managed clinical trials.

The adoption of the eSource solution has transformed clinical trials, with 83% of sites reporting improved data quality. Far from a niche innovation, eSource in clinical trials now underpins modern study design, enabling accurate data capture, smoother site workflows, and flexible trial models such as decentralized and hybrid studies.

What is eSource in Clinical Trials?

Electronic Source (eSource) in clinical trials refers to any trial source data that is initially recorded in an electronic format. Unlike traditional handwritten or paper-based documentation, eSource ensures that the electronic version is the primary and original record.

This includes digital capture of clinician observations, patient assessments, lab outputs, device readings, and operational trial records, all created and stored electronically.