Yes, my doctor prescribed the infusion because of low ferritin. My hemaglobin has always been fairly normal but my ferritin has been all over the place for the last year. It was 4 when I was first diagnosed. It got up to 23 in about 9 months after trying all kinds of iron supplements. I couldn't tolerate most oral iron. Then within the last month it fell to 11. My doctor was concerned about it, plus I was having terrible symptoms, dizziness, near fainting, extreme fatigue, rapid heartbeat, shortness of breath. My doctor says my ferritin should be around 70 or 80 with the infusion he gave me. I think it was 800 mg of infed. By the way, my platelet count was 328, down from 362. I have to wait a couple of days for the ferritin results.