A system for wound treatment using a serum, comprising a device for recovering serum from whole blood, comprising:a blood bag for the reception and coagulation of whole blood, which has an outlet for discharging the serum-containing fluid from the blood bag and a barrier in the region of the outlet for retaining the coagulum,a filter module which is fluidically connected to the blood bag and comprises a housing and an interior, in which a semi-permeable membrane is arranged, said membrane dividing the interior into a retentate space and a permeate space and separating the fluid discharged from the blood bag into a permeate comprising the serum and into a retentate in which any particulate components contained in the fluid remain.The system for wound treatment further comprises a wound care system with a capillary membrane system for dispensing the serum to a wound. The capillary membrane system is connected to at least one supply line, which for its part is connected to the permeate outlet of the filter module.