What does informed consent entail for trial participants?

• A. Informed consent involves providing participants with all necessary information to make an educated decision about their involvement.
• B. Consent is a one-time form with no ongoing information.
• C. Consent is not required for non-therapeutic trials.
• D. Consent must be signed but not explained.

Answer: (A)

Informed consent is a process that ensures participants can decide freely and with understanding whether to join a trial. It means the investigator provides comprehensive information about the study—its purpose, procedures, potential risks and benefits, alternatives, confidentiality, compensation, and who to contact—and checks that the participant truly understands this information. Consent isn’t just a form you sign once; it is an ongoing responsibility. Participants should have the opportunity to ask questions, understand their rights, and know they can withdraw at any time without penalty. If new information arises, re-consent may be needed.

This is why the option describing providing all necessary information to make an educated decision is the best fit. The other statements fall short because a one-time form without ongoing information isn’t sufficient for ongoing understanding; consent is required for all research involving people, not just therapeutic ones; and simply signing without explanation fails to ensure true understanding and voluntary agreement.