According to the SNBTS Annual Report, 46% of donations in Scotland were issued as red cell concentrates. Linked evidence PRSE0002133 - SNBTS Annual Report 1 April 1975 31 March 1976 - 31 Mar 1976 Chronology Information Date: 1 April 1975 31 March 1976 Chapter/issue Blood Services: Regional Transfusion Centres