Some trials seek volunteers with particular illnesses or conditions, while other trials need healthy volunteers. Healthy volunteers are most often used in Phase I trials, vaccine studies and trials on preventive care. The factors that allow you to participate in a trial are called inclusion criteria. The factors that prevent you from being a participant are called exclusion criteria. These criteria are developed to identify appropriate participants and to help ensure safety.
Clinical trials can take place in hospitals, doctors' offices and community clinics.
The specific clinical trial process depends on the type of trial. The trial team will include doctors and nurses as well as other health care professionals. At the beginning of the trial, your medical history will be taken and a physical examination will be performed. You will be given specific information regarding your participation in the trial. During the trial, you will be monitored at intervals specified by the trial protocol.