A disposable blood transfer conduit is used in association with a pump drive unit, a blood collection vessel and a blood concentration device. The blood transfer conduit comprises a blood transfer tube (13) and a peristaltic pump element (12) having an enclosed housing mounted about the blood transfer tube (12). At least part of the blood transfer tube (13) is resiliently deformable and extends through the enclosed housing of the peristaltic pump element (12). The disposable blood transfer conduit may be used in the concentration of blood for autologous blood transfusion.
