How much is too much iron in blood?

According to WebMD, normal values of iron in the blood serum typically fall between 70 and 175 micrograms per deciliter for men, between 50 and 150 micrograms per deciliter for women, and between 50 and 120 micrograms per deciliter for children. However, these ranges may differ according to each laboratory.

WebMD further states that iron plays important roles in the human body. It is found in hemoglobin, a protein used to carry oxygen in red blood cells, and it is required for the normal functioning of organs and muscles. High levels of iron in the blood may be caused by medical conditions such as hemochromatosis.