23 Monitoring Operations
23.1 Purpose
This module defines the Clinical Research Associate (CRA) responsibilities for monitoring clinical trial sites to ensure subject safety, data integrity, and regulatory compliance.
23.2 Scope
Applies to on-site and remote monitoring across all interventional clinical trials. Therapeutic-area–specific considerations (e.g., oncology, vaccine trials) are highlighted where applicable.
The monitoring framework described in this module represents the core execution model for clinical trials.
Therapeutic area appendices (e.g., oncology or vaccine trials) do not change monitoring principles or responsibilities. Instead, they modify the areas of emphasis within monitoring activities based on differences in safety profiles, endpoint timing, and operational risk.
CRAs should apply the same monitoring framework while adjusting focus according to study-specific risks and therapeutic context.

23.3 CRA Accountability
- Oversight of protocol compliance
- Verification of critical data and processes
- Identification, documentation, and follow-up of issues
- Maintenance of inspection-ready documentation