Reid directed the Laboratory of Immunohematology at the
New York Blood Center, where she led the transition from serologic methods for characterizing red cell antigens and antibodies to a combination of serology and DNA-based
genotyping of blood group antigens. She published hundreds of articles and was described by reviewers as a "scientist and world-renowned immunohematologist". Her laboratory identified novel blood group antigens and alleles in several different ethnic groups. She holds a patent for a DNA-based method to identify compatible donors for patients requiring blood transfusions. ==Personal life==