Top 10 unbelievable historical concurrencies. A serum ferritin test determines how much iron is in the body. Normal ferritin levels for men range from 24 nanograms per milliliter (ng/mL) to 336 ng/mL. The normal levels for women is slightly less, ranging from 11 ng/mL to 307 ng/mL.The values are the same whether reported in nanograms per milliliter or micrograms per liter (mcg/L), with 100 ng/mL being the same as 100 mcg/L.op 10 unbelievable historical concurrencies. A serum ferritin test determines how much iron is in the body. Normal ferritin levels for men range from 24 nanograms per milliliter (ng/mL) to 336 ng/mL. The normal levels for women is slightly less, ranging from 11 ng/mL to 307 ng/mL.