What are the phases of clinical trials? Clinical trials are conducted in phases. The trials at each phase have a different purpose and help scientists answer different questions: • In Phase I trials, researchers test an experimental drug or treatment in a small group of people (20-80) for the first time to evaluate its safety, determine a safe dosage range, and identify side effects. • In Phase II trials, the experimental study drug or treatment is given to a larger group of people (100-300) to see if it is effective and to further evaluate its safety. • In Phase III trials, the experimental study drug or treatment is given to large groups of people (1,000-3,000) to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the experimental drug or treatment to be used safely. • In Phase IV trials, post marketing studies delineate additional information including the drug’s risks, benefits, and optimal use.

panel of two line managers asking you questions about being a cra. behavioral and circumstantial. they also ask you to talk about your background and to walk them through your resume or experience.