Which statement best describes documentation of informed consent in a trial?

• A. The IRB/IEC approval letter alone suffices for consent.
• B. The informed consent obtained from every participant prior to clinical trial participation.
• C. The participant's consent should be obtained during the final visit.
• D. The consent discussion must be documented, and informed consent obtained before participation.

Answer: (B)

The essential idea is that participants must be informed and freely agree to join the trial before they start any study procedures, and this consent should be captured for the record. Obtaining informed consent from every participant prior to participation ensures individuals understand what the trial involves, the potential risks and benefits, and their right to decline or withdraw, while the act of obtaining that consent creates the documented record needed for ethical and regulatory accountability.

While it's important that the consent discussion is documented and that consent is obtained before participation, the most fundamental requirement described here is that each participant must give informed consent before joining the trial.