Objective: Iron deficiency is a common complication in patients with polycythemia vera (PV). Hepcidin is a principal regulator of iron homeostasis. The aim of our study was to assess prohepcidin,a hepcidin precursor,and other iron status parameters in the serum of PV patients. Methods: The study was performed in 60 patients (F/M 26/34) aged 38~84 (66±10) years. The control group consisted of 20 healthy volunteers,age and sex matched. The following parameters were determined in blood serum samples: prohepcidin concentration,iron content,unsaturated iron binding capacity (UIBC),total iron binding capacity (TIBC),transferrin saturation (TfS),and concentrations of ferritin and soluble transferrin receptor (sTfR). Results: All PV patients showed significantly lower levels of prohepcidin,higher levels of sTfR and TIBC compared to the control group. 40% of the patients from the study group showed concentrations of ferritin below the normal range and significantly lower levels of serum iron and TfS,and significantly higher levels of sTfR,UIBC and TIBC in comparison with the rest of the study group. In this group of patients,prohepcidin concentrations were significantly lower than those in other patients. Conclusion: The results indicate that PV patients suffer from iron metabolism disorders. The decreased serum level of prohepcidin in PV patients may be a result of iron deficiency. Objective: Iron deficiency is a common complication in patients with polycythemia vera (PV). He aim is our principal regulator of iron homeostasis. The aim of our study was to assess prohepcidin, a hepcidin precursor, and other iron status parameters in the serum of PV The control parameters consisted of 20 healthy volunteers, age and sex matched. The following parameters were determined in in-patients (F / M 26/34) aged 38-84 (66 ± 10) years. Total iron binding capacity (TIBC), transferrin saturation (TfS), and concentrations of ferritin and soluble transferrin receptor (sTfR). Results: All PV patients showed significantly lower levels of prohepcidin, higher levels of sTfR and TIBC compared to the control group. 40% of the patients from the study group showed concentrations of ferritin below the normal range and significantly lower levels of serum iron a nd TfS, and significantly higher levels of sTfR, UIBC and TIBC in comparison with the rest of the study group. In this group of patients, prohepcidin concentrations were significantly lower than those in other patients. Conclusion: The results indicating that PV patients suffer from iron decreased disorders level. The decreased serum level of prohepcidin in PV patients may be a result of iron deficiency.