I have been doing phlebotomy for hemochromatosis. I got my ferritin down to 50 then it went back up to 300! why?! do not drink low iron diet

Iron accumulates. In Hemochromatosis, your body absorbs too much iron. Even if your diet is low iron, as it should be, you can still over time accumulate iron in your tissues again since the underlying problem with iron metabolism is ever present. Ferritin is also a marker of inflammation, and often rises during infection etc. If you have had any such issues lately, it could be a result of that as well.