Clinical trials are experiments designed to find out whether an intervention is safe and effective and that the potential benefits of the intervention outweigh the risks. There are two types, observational studies, and clinical trials.

Clinical trials are a type of research that studies new tests and treatments and evaluates their effects on human health outcomes. People volunteer to take part in clinical trials to test medical interventions including drugs, cells and other biological products, surgical procedures, radiological procedures, devices, behavioural treatments and preventive care.

Medical research projects play an important role in the future of healthcare in the United States. Participating in a research study or a clinical trial has the potential to benefit both the individual participants and other people who have or may acquire health issues or diseases in the future.