PSI International, Inc. (PSI) based in Fairfax, Virginia, is a professional services company specializing in providing health science and regulatory compliance services to the regulatory authorities and the private sector. Our clients include the Food and Drug Administration (FDA), National Cancer Institute (NCI) as well as members of the pharmaceutical community (references are available upon request)

PSI has the management team, personnel, and technical expertise to provide a comprehensive spectrum of services to support both pre-marketing and post-marketing activities.