The accepted normal range for blood ferritin is very broad. A healthy range for women is considered to be 11 to 307 micrograms per liter, and for men, it’s considered to be 24 to 336 micrograms per liter. Compared to other nutrients, this is a broad range. Given the potentially negative effects of excess iron, it is advisable to measure your ferritin levels during your annual checkup. Further research is warranted to identify a more precise healthy range.