If people have ferritin less than 70 ng/ml, they have a deficiency. Those with ferritin higher than 70 and less than 300 have more than they need, but it’s not high.
I understand. But not all not all deficiencies are treated by drs - as I explained in my post when I had deficiencies with leukemia. Only when they reach certain levels. So, for instance - even if I was not a recovering bone marrow transplant patient - the Red Cross would not have accepted my blood. The levels were too high. It would have been treated by blood letting (and throwing away the blood) or apheresis.