[Initial personal results of a technic of removing leukocytes by filtration on cotton fibers (Imugard Ig 500, Terumo)].

The technical parameters of blood filtration through cotton Imugard IG 500 filters were evaluated. Sixty units of red cell concentrates were filtered. The mean value of the residual leukocytes indicated a leukocyte depletion greater than 98%, disregarding the unit age and the filtration temperature. The number of residual leukocytes was below 1 X 10(8) in 94% of the filtered units and less than 0.3 X 10(8) in 68%. The number of residual platelets was less than 1 X 10(10) in 92% of these units.