Quest Diagnostics says the normal ferritin range for adult males is 20 to 380 ng/mL, and for females, 10 to 288 ng/mL. LabCorp roughly concurs, saying 24-336 ng/mL for men and 11-307 ng/mL for women.

Iron deficiency can be the cause of fatigue, dizziness and hair loss in women. Know what a ferritin test is and why it is ...

For people assigned female at birth, normal ferritin levels are between 14.7 and 205.1 nanograms per milliliter (ng/mL), according to the Cleveland Clinic. That's a massive range.

One is that hypothyroidism can cause a low ferritin level in absence of iron deficiency, and you should be sure your thyroid level is right in the middle of normal.

A low ferritin level is the first clue for doctors to identify and treat conditions like gastric bleeding. High ferritin, on the other hand, can be an indicator of several underlying medical issues.

The normal range for ferritin is 12 to 150 ng/ml in girls, and some people think a ferritin in the 40-60 range is better for endurance performance. There is little data to support this.

If you're feeling constantly fatigued, tired throughout the day, or frequently experience mid-run weakness, it may be low ferritin levels. Here's what to do.

Quest Diagnostics says the normal ferritin range for adult males is 20 to 380 ng/mL, and for females, 10 to 288 ng/mL. LabCorp roughly concurs, saying 24-336 ng/mL for men and 11-307 ng/mL for women.

The ferritin level doesn't seem to be a concern for my internal medicine doctor, though the neurologist wondered why he isn't trying to figure out why my ferritin levels run on the low end of normal.