Can a participant leave a clinical trial after it has begun? 1.41K viewsOctober 10, 2022FDA 0 Sam Smith11.38K September 22, 2020 0 Comments Spread the loveSpread the love 1 Answer ActiveVotedNewestOldest 0 Blogolu28.38K Posted September 22, 2020 0 Comments Spread the loveYes. A participant can leave a clinical trial, at any time. When withdrawing from the trial, the participant should let the research team know about it, and the reasons for leaving the study. Spread the love Login