The unique number that is assigned to the Federal wide Assurance. The Federal wide Assurance (FWA) is an assurance of compliance with the federal regulations for the protection of human subjects in research. It is approved by the Office for Human Research Protections (OHRP) for all human subjects' research conducted or supported by the Department of Health and Human Services (HHS). The FWA is also approved by OHRP for Federal wide use, which means that other departments and agencies that have adopted the Federal Policy for the Protection of Human Subjects (also known as the Common Rule) may rely upon the FWA for the research that they conduct or support. http://ohrp.cit.nih.gov/efile/FWA_start.asp .