How Do Electronic Data Capture (EDC) Systems Work? Electronic Data Capture (EDC) systems are digital platforms used in clinical trials to collect, manage, and store patient data securely and efficiently. They replace traditional paper-based Case Report Forms (CRFs), making data collection faster, more accurate, and compliant with regulatory standards. 1. Study Setup & Database Design (Clinical trial sponsors and researchers design an electronic Case Report Form (eCRF). 2. Data Entry & Collection