102 video review lessons. Review AP US History by watching and listening to over 18 hours worth of videos carefully coordinated to the AP US History syllabus. 290 AP US History practice questions. Test your understanding of each concept without having to take an entire AP US History practice exam. Customized AP US History study plan.
In fact the most common cause of microcytic anemia is iron deficiency, and in low risk patients physicians often confirm the diagnosis of iron deficiency as the cause by a good response to iron therapy.
1 Hypochromic microcytic anemias, characterized by the presence in the circulating blood of red cells that are smaller than normal and poorly filled with hemoglobin, fall into two main categories. The first is a result of a deficiency of iron, and the second is a result of impaired production of hemoglobin; in either case there is an inadequate amount of the final product in the red cell.