We updated the design of this site on December 18, 2017. Learn more.
ClinicalTrials.gov
IMPORTANT: Due to the lapse in government funding, the information on this web site may not be up to date, transactions submitted via the web site may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

Glossary Definition

LAST VERIFIED DATE
The Last Verified date is the most recent date on which all of a clinical study's information on ClinicalTrials.gov was confirmed as accurate and current by the responsible party. This date may be different from the Last Updated date. If a study with a status of Recruiting; Not yet recruiting; or Active, not recruiting has not been confirmed within the past 2 years, the study's Recruitment status is shown as Unknown. (See also Record Verification Date data element on ClinicalTrials.gov.)