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Types of clinical trials

There are different types of clinical trials, including:

  • treatment trials to test new treatments, new medicines or combinations of medicines; or other new therapies such as surgery, the use of new medical devices or new approaches to surgery
  • diagnostic or screening trials to evaluate tests or procedures to diagnose and detect diseases or conditions
  • prevention trials to test new ways to prevent disease including medicines, vaccines, vitamins, or changes to diet, lifestyle or behaviour