Low HbA2 indicates anemia, the most common of which are iron deficiency anemia, iron granulocytic anemia, etc. At this point, it is important to check whether other tests are also abnormal to assess the cause of the anemia. It is also important to be aware of thalassemia, which is a hereditary disease, and often has elevated HbA2. However, if the HbA2 is low, just a little below the normal value, it is not considered a serious anemia, but probably an anemia of the physiological cycle, which may return to normal after a week of menstruation. In this case, it is recommended to eat more lean meat, spinach, animal liver and other foods to replenish iron and blood.