- Donors must satisfy standards including those set forth by FACT (Foundation for the Accreditation of Cellular Therapy) and the criteria specified in FDA 21 Code of Federal Regulations (CFR) 1271. Specifically, screening for risk factors for communicable disease as well as infectious disease screening by serologic and PCR testing as outlined below. Including testing for IV, Hepatitis B, Hepatitis C, HTLV I and II, CMV, EBV, and toxoplasmosis, westnile virus, syphilis, varicella zoster, and Chagas disease.