opt-in opt-in
To agree to optional study activities or optional data uses that are not required for the study.
Example of opt-in in a sentence
A participant can opt-in and agree to have an extra blood draw that is not required.
More Info
When certain study procedures or activities are optional, and the participant chooses to do them, this is called opt-in.
Sometimes a consent form has multiple parts that participants can choose to opt-in for. For example, a participant might be asked to opt-in for specific study activities, like biobanking samples for future research.
Other info to think about when joining a study
You might see the term “opt-in” used to describe the choice you have about whether to do certain things in a study or have your data used beyond the original goals of the study.
If you have any questions about what is required to be in a study, and what activities are optional, please ask the study team. You can also ask the study team about what happens if you change your mind.
