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Do you or someone you know want to participate in a clinical study? See information for patients and families.

How to Edit Your Study Record

This page will no longer be updated but will remain available here for historic purposes until the classic site is retired. Please visit How to Edit Your Study Record on the modernized website for the most recent information.


Editing and Updating a Record

This page describes the overall process of editing a study record. If you would like step-by-step instructions for entering registration or results information into the PRS, see the PRS Guided Tutorials. The tutorials include a quick overview guide called Updating a Study Record that briefly summarizes how to use the tutorials to support editing a study record. [Requires a browser that supports HTML5.]

At any time, you can make updates and edits to a record published on by logging into the Login to PRS and clicking on Edit Record under the Protocol Records heading on the PRS main menu. After you finish making changes, you will need to release (submit) the record to for review and processing. See the Protocol Review Criteria (PDF) for a description of items that should be addressed before releasing the record to See the Protocol Information Review Process for more information.

Required Registration Updates

Responsible Parties should update their records within 30 days of a change to any of the following:

Other changes or updates to the record, such as protocol amendments, must be made at least every 12 months. It is recommended that the Record Verification Date be updated at least every 6 months for studies that are not yet completed, even if there were no changes to the record.

Submitting Results

For certain clinical trials subject to Section 801 of the Food and Drug Administration Amendments Act (FDAAA 801), the Responsible Party must submit summary results no later than 12 months after the date of final data collection for the prespecified primary outcome measure (see Primary Completion Date data element on See How to Submit Your Results and FDAAA 801 and the Final Rule for more information.

View Earlier Versions of Your Study Record

The most recent version of a study record is displayed on A history of changes made to a study record is available on the archive site. You will need to click on the History of Changes link near the bottom of the full text view to see the archived versions.

This page last reviewed in May 2021