How Rigorous Clinical Trial UAT Prevents Supply Risk

By George Cortez
Director, Clinical Supplies
Every clinical trial sponsor conducts UAT before going live with an IRT system. Yet supply issues continue to surface mid-study, often requiring costly remediation and manual interventions. Too often, clinical trial UAT is designed to confirm system functionality, not to rigorously challenge the supply chain logic under real-world conditions.
Testing that confirms a patient can be randomized and that resupply triggers under controlled conditions is necessary, but it is not sufficient. Clinical trials rarely follow a linear path. Sites close temporarily. Patients miss visits or arrive out of window. Countries launch in phases, with differing regulatory approval timelines. Depot inventory fluctuates. Protocol amendments change supply behavior mid-study.
These are not edge cases; they are the reality of global clinical trial execution. Yet many UAT plans skip this level of operational stress testing. When they do, latent risks remain undetected until the system is live.
CSC takes a fundamentally different approach to clinical trial UAT. We view it as the last and most important opportunity to uncover hidden supply and trial risks before they impact the sponsor and, most importantly, the patients.
At CSC, our methodology starts with operational mapping. Our experienced consultants know how to digest the protocol and break down the IRT specifications to ensure a thorough UAT is conducted. We establish a clear understanding of what clinical operations, clinical development, data management, and biostats require from the IRT system and execute rigorous testing. For clinical supplies specifically, we simulate global clinical supply flows from depot to site to patient, across all active regions. We model site enrollment variability, patient adherence patterns, and regional logistics constraints. We design test cases that deliberately challenge supply resilience: scenarios where sites reopen unexpectedly, where kits expire mid-shipment, where protocol amendments trigger supply changes, and where depots operate under constrained stock levels.
We also insist on conducting UAT with experienced clinical supply professionals at the table, not just testers focused on system requirements. Supply chain experts understand the nuances of expiry handling, returns to workflows, labeling compliance, and regional lead time variability—and they know where subtle logic gaps often hide.
Our goal is not to confirm that the system works as expected under ideal conditions. Our goal is to push the system to its limits and expose points of failure while there is still time to address them. A rigorous clinical trial UAT process builds confidence that your supply chain will perform under pressure, preventing stockouts, delays, and supply risk in the real world, where patients depend on clinical trial reliability.
Interested in learning how rigorous UAT can prevent supply risks in your clinical trials? Contact the CSC team today.