This guidance document provides recommendations for complying with 21 CFR 610.47 and 21 CFR 610.48 to (1) blood establishments that collect blood or blood components, including Source Plasma and Source Leukocytes, (2) hospitals, and (3) other consignees. This guidance does not apply to autologous donations, all Lookback donations (see p.4 for definition) that are identified as at increased risk of transmitting HCV, pooled blood components intended solely for further manufacturing into products that are manufactured using validated viral clearance procedures, and blood and blood components that were intended for manufacture into non-injectable products subject to the labeling described in Section V.