Official websites use .gov
A .gov website belongs to an official government
organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Watch this video to learn about clinical trials, including what kinds of things that clinical trials test, and how scientists make sure that people who volunteer for clinical trials are kept safe.
Last Reviewed: December 28, 2022
