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 In general, there are three major types of anemia, classified according to the size of the red blood cells: 2  If the red blood cells are smaller than normal, this is called microcytic anemia. 3  The major causes of this type are iron deficiency (low level iron) anemia and thalassemia (inherited disorders of hemoglobin).