Good post S8, you need to be very aware of why you have anemia. There are different types and caused by different reasons (abnormal growth, bleeding, diet, toxins etc).
Hair testing is a good idea.
There is iron that is available and iron that is not available (in the body), even though you maybe anemic.
High doses of iron can cause mineral imbalances. It easily adheres (bonds) due to the body requirement for oxygen. Iron will take the place of other minerals in the bonds.
If you know why you have it then I am sure your health professional will have advised you what to take.
