What is a protocol?

• A. A budget plan for the study
• B. Document describing objectives, design, methods, and conduct of a trial
• C. A list of investigators
• D. A consent form template

Answer: (B)

A protocol is the formal plan for a clinical trial. It specifies what the study aims to learn, how the study is structured, what methods will be used, and how the trial will be conducted. It includes the study objectives, design (for example, randomized or blinded), the population to be studied (inclusion and exclusion criteria), treatment regimens, endpoints, assessment schedules, and the statistical analysis plan. It also covers safety monitoring, ethical considerations, and management of data and study conduct. This document acts as the roadmap guiding all trial activities and is the basis for regulatory and ethics approvals; changes to the protocol require proper amendments and oversight. It differs from a budget plan, which focuses on costs; from a list of investigators, which is just personnel information; and from a consent form template, which is used to inform participants and obtain consent rather than to outline the trial’s plan.