The Northern Ireland Blood Transfusion Service exists to fully supply the needs of all hospitals and clinical units in the province with safe and effective blood and blood products and other related services. The discharge of this function includes a commitment to the care and welfare of our voluntary donors. It is an independent, Special Agency of the Department of Health and is responsible for the collection, testing and distribution of over 55,000 blood donations each year. The Service operates three mobile units at nearly 180 locations throughout the province. Including headquarters, located on the site of the Belfast City Hospital, a total of almost 800 donation sessions are held each year.