<prompt> The type of hemoglobin that has least affinity for 2,3-Diphosphoglycerate 2,3-DPG or 2,3-BPG is:HbAHbFHBHgA2  <response>: Foetal hemoglobin does not bind 2,3-DPG. Ref: Four Hidden Metamorphoses: A Remark on Blood, Muscle, Mental Diseases and Cancer By Maurice Israel, 2004, Page 9 