In the study, it was aimed to investigate the correlation between ERFE and hepcidin levels in patients with iron deficiency anemia and the parameters in iron deficiency anemia, and by looking into ERFE and hepcidin levels, to determine whether the factors that will affect ERFE and hepcidin levels will make an additional contribution to the diagnosis and treatment of iron deficiency anemia. The gene discussed is HAMP; the disease is Iron deficiency anemia.