Ferritin concentrations are measured in nanograms per milliliter (ng/mL) of blood. Normal ferritin levels range from 15-150 ng/mL for females and 15-200 ng/mL for males globally. Normal ferritin ...

However, for people with low ferritin levels, which is the stored form of iron in the body, the best option is a specific type of iron supplement that contains ferrous sulfate. Ferrous sulfate is ...