What is an Open-Label Study?

An open-label study is a type of clinical trial in which both the participants and the study team know which treatment each participant is receiving. Unlike blinded studies, treatment assignments are not concealed, allowing all involved parties to know the investigational product being administered.

Open-label studies may be conducted as standalone trials or as extension studies following blinded clinical trials.

Open-label studies are commonly used when blinding is not practical or necessary. They may be conducted in early-phase clinical trials, long-term extension studies, or studies where treatment administration or monitoring requires knowledge of the assigned intervention.

Although treatment allocation is not concealed, study procedures, participant monitoring, and data collection continue according to the approved protocol.

During study setup, study teams can configure open-label study designs, treatment arms, participant allocation rules, visit schedules, and drug dispensing workflows within Clinion's unified eClinical platform. Because treatment assignments are visible, the platform supports transparent participant management while maintaining protocol-defined workflows, study oversight, and complete traceability across connected systems.

Clinion RTSM also supports treatment allocation, investigational product dispensing, and drug supply management for open-label studies, helping ensure that participants receive the correct treatment throughout the trial.

A participant completes a one-year blinded clinical trial evaluating a new treatment for rheumatoid arthritis. After the blinded phase ends, eligible participants are invited to join an open-label extension study where everyone receives the investigational treatment. Both the participant and the study team know which treatment is being administered while long-term safety and effectiveness continue to be monitored. 

Blinding
Single-Blind Study
Double-Blind Study
Randomization
Treatment Arm
Open-Label Extension

RTSM Software | Randomization & Trial Supply Management 
What is RTSM in Clinical Trials? Role and Significance Explained
Guide to Selecting the Right RTSM System for Clinical Trials

Study Setup & Design