Fig. 3From: Intravenous iron and erythropoietin therapy for postoperative anemia among orthopedic surgery patientsChanges in folate and vitamin B12 levels. Serum folate levels following IV iron monotherapy (Group 1, A), combined IV iron and rHuEPO therapy (Group 2, B), and placebo (Control, C). Serum vitamin B12 levels following IV iron monotherapy (Group 1, D), combined IV iron and rHuEPO therapy (Group 2, E), and placebo (Control, F)Back to article page