@thebiohackingrn: Replying to @DG Low ferritin but normal iron? 🩸 Your iron levels can look “normal” on your labs while your iron stores (ferritin) are running on empty. As an RN, I break down the difference between serum iron and ferritin. #lowferritin #ferritin #irondeficiency #irondeficiencysymptoms #hairloss