Opportunity directory
Discover the kinds of studies that exist
Study categories
Phase I Studies
Learn how a new approach behaves in the body and what amount is well tolerated.
Phase II Studies
Look at whether an approach shows signs of working for a specific condition while continuing to study safety.
Phase III Studies
Compare a new approach with current standard options across a broad group of people.
Phase IV Studies
Follow an approach after it has been approved to learn about long term use in everyday settings.
Observational Studies
Researchers watch and record health information over time without assigning a study product. Many involve questionnaires or routine visits.
Healthy Volunteer Studies
Some studies, often early phase or observational, invite people without the condition being studied so researchers can compare results.
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Get Trial Phase LessonsAny trial programs or research organizations that users may be introduced to through Trial Phase Explorer are independent organizations operating under their own protocols and eligibility criteria. Trial Phase Explorer does not control, supervise, guarantee, or take responsibility for protocols, eligibility criteria, safety monitoring, outcomes, or conduct of any independent clinical trial program. Please review the materials provided by the independent organization and talk with your own licensed healthcare provider before deciding to participate.