Hi Mom,
I would suggest not taking iron until a full iron panel is done. This would include serum iron, serum ferritin and TIBC. Unless this panel definitely shows iron deficiency, iron should not be given. This is the most common mistake doctors make with thal minors. The low Hb is not due to lack of iron, but due to the lesser hemoglobin production of thal minor. I'm not certain if it's the ferritin or serum iron that is 48, but neither would show deficiency at 48. Taking iron when not needed can cause iron build up over the years and should be avoided.