Understand trials
Clinical Trials by Recruitment Status
Every study reports where it stands. Recruiting, not yet recruiting and enrolling by invitation are the ones a person could still join.
Recruiting
Enrolling participants now.
64,983 studies
Not yet recruiting
Approved to start; enrolment has not opened.
30,078 studies
Enrolling by invitation
Participants are selected and invited by the study team.
5,279 studies
Active, not recruiting
Under way with participants already enrolled.
22,181 studies
Completed
Ended normally; results may be posted.
332,839 studies
Suspended
Paused; may resume.
1,776 studies
Terminated
Stopped early and will not resume.
34,568 studies
Withdrawn
Stopped before enrolling its first participant.
16,917 studies
Unknown status
Not verified by the sponsor for over two years.
97,733 studies