Since 1975 PRI has conducted clinical studies for both domestic and foreign pharmaceutical companies, as well as the U.S. Government: NIH, NIDA, VA. 

We are experienced in all phases of clinical research; however, we focus on research phases II, II-B, III, III-B, and IV. Our staff is highly experienced in psychiatry, neurology, ophthalmology, rheumatology, family practice, and gerontology. We have worked previously with the following grant / study sponsors: