Abstract: A fluid recovery and transfer system utilizes hydraulic pressure on a plurality of collapsible containers to effect the alternate intake and output of a fluid from the collapsible containers. The hydraulic pressure is generated through the pumping of a plump fluid to and from a plurality of rigid containers within which the collapsible containers are disposed. The pumping of the pump fluid alternately creates positive and negative pressures within the collapsible containers to draw in the body fluid and to subsequently eject the body fluid. The fluids recovered in such a manner may either be stored, processed, or retransfused back to the body.