Protocol Registration and Results System (Logo)  

Extensible Markup Language (XML) Schemas is a database of information on ongoing and completed clinical studies. U.S. laws and other policies specify what information must be provided and for which studies. For more information, see U.S. Laws, Regulations, and Guidance.

Information about a clinical study is submitted by the responsible party to via the interactive Web-based Protocol Registration and Results System (PRS) or by uploading XML files to the PRS. Details on the data elements and XML formats are provided below:

Protocol Registration Information

Results Information

For more details on submitting information to, see the Submit Studies section of the site.

This page last reviewed in October 2017