Objective To compare the adsorptive capacities of different dialysis membranes during hemodialysis treatment . Methods Twenty-four stable maintenance hemodialysis patients underwent a 4-hour hemodialysis session by using dialyzer with polyacrylonitrile (PAN; 900-SF, Asahi) , polymethyl methacrylate (PMMA; B3-l. 3A, Toray), polysolute (PS; F-60, Fensenius) or Cuprophan (Cu; ALF-120, Nikkiso) membrane respectively. Total adsorption elimination of beta-2-microglobulin (β2-m) per 4-hour hemodialysis session and per square meter membrane surface wa...