leukapheresis /lo̅o̅′kəfərē″sis/ [Gk, leukos + aphairesis, removal] , a donation process by which blood is withdrawn from a vein, white blood cells are selectively removed, and the remaining blood is reinfused into the donor. It is a treatment or supportive care measure in patients with leukocytopenia. Compare plasmapheresis, plateletpheresis. See also apheresis.
