What Is Interactive Response Technology (IRT)?

Managing patient randomization and drug supply across multiple sites is one of the most complex operational challenges in clinical trials. Interactive Response Technology (IRT), sometimes called Randomization and Trial Supply Management (RTSM), gives sponsors and sites a centralized way to handle these tasks. By connecting patient and supply data in one system, IRT helps trial teams reduce bias, prevent drug shortages or overages, and stay audit-ready throughout the study. This piece breaks down how IRT supports three core areas of trial execution—patient management, drug supply management, and reporting and analysis—and explains why these capabilities matter for reducing risk and timeline delays. From assigning patients to treatment arms and maintaining blinding, to triggering shipments, tracking site inventory, and managing complex dosing regimens, this is a practical starting point for understanding what a modern IRT solution should deliver.