1. Further testing of donations that are reactive on a licensed donor screening test for antibodies to hepatitis C virus Publication: Silver Spring, MD : Center for Biologics Evaluation and Research, October 2019 Subject(s): Blood -- virologyBlood Banks -- standardsBlood DonorsHepatitis C -- bloodHepatitis C -- transmissionDonor SelectionHepatitis C Antibodies -- bloodNucleic Acid Amplification TechniquesHumansUnited StatesUnited States. Department of Health and Human Services.United States. Food and Drug Administration.