Skip to Main Content
A service of the U.S. National Institutes of Health
Now Available for Public Comment
Notice of Proposed Rulemaking (NPRM) for FDAAA 801 and NIH Draft Reporting Policy for NIH-Funded Trials
CLINICALTRIALS.GOV IDENTIFIER (NCT NUMBER)
A unique identification code given to each clinical study
on ClinicalTrials.gov. The format is the letters "NCT" followed by an 8-digit number (for example, NCT00000419).