[Effects of plasmapheresis on the blood donors. Changes caused by long-term plasmapheresis in normal donors].

Following 115 donors during two years of regular plasmapheresis it was proved that the procedure is in no way harmfull for the donor. Even with intensified plasmapheresis to two times a week no substantial fall of protein has been observed. During the procedure a slight haemoconcentration has been seen and the loss of erythrocytes was not greater than 13 ml.