This study compares centrifugation (CF) and multiple-pass hemoconcentration (MPH) for salvaging residual blood after cardiopulmonary bypass. A randomized trial with 61 patients found that MPH resulted in higher postoperative albumin, total protein, fibrinogen, and platelet levels compared to CF. While CF processed blood faster and cleared heparin more consistently, MPH was associated with lower allogeneic transfusion needs and reduced fluid retention. Overall, MPH demonstrated improved biochemical and clinical outcomes.