Ferritin is having a moment. The iron-storage protein is showing up more and more in conversations about fatigue, wellness and blood work, but what does your ferritin number actually tell you?
Ferritin is a blood marker that gives doctors a window into how much iron is stored in the body. With recent changes to the guidelines for diagnosing iron deficiency, ferritin levels are getting even more attention.
Earlier this month, the American Society of Hematology (ASH) released new guidelines for diagnosing iron deficiency, recommending higher ferritin thresholds than have traditionally been used. The goal is to identify iron deficiency earlier, before it develops into iron deficiency anemia.
So, what does your ferritin number actually tell you? Here’s what to know.
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