phase IV trial

Definition / meaning of phase IV trial

After a treatment has been approved and is being marketed, it is studied in a phase IV trial to evaluate side effects that were not apparent in the phase III trial. Thousands of people are involved in a phase IV trial.

Listed under:

Find More About 'phase IV trial'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

Leave a Comment

*