February 2015—Simplifying the search for units of uncommon blood: For blood banks, obtaining red blood cell units with uncommon blood types can be a time-consuming and daunting task in which delays can hinder patient care. So two blood bank professionals, frustrated by the challenge, set out to change that. The American Rare Donor Program fields requests for rare blood types, which are blood types found in fewer than one in 1,000 donors, but it is “not set up to serve those requesting uncommon units—defined as blood with combinations of antigens that occur in fewer than one in 100 people,” says Connie Westhoff, PhD, director of immunohematology and genomics at New York Blood Center.