Blood test report to see the anemia: first, look at the hemoglobin concentration, because the hemoglobin concentration is the most intuitive indicator to reflect the severity of anemia. At the same time, according to the degree of decrease in hemoglobin concentration, anemia is divided into four types: 90-120g/L is mild anemia, 60-90g/L is moderate anemia, 30-60g/L is severe anemia, and less than 30g/L is very severe anemia, so the hemoglobin concentration can be used to understand the severity of anemia. Second, the average volume of red blood cells reflects the size of the red blood cells. If the average erythrocyte volume is large, it is common in megaloblastic anemia; if the average erythrocyte volume is small, it is common in iron deficiency anemia and thalassemia; if the average erythrocyte volume is normal, it is common in aplastic anemia or acute blood loss anemia. Finally, it is also important to look at the average red blood cell hemoglobin volume. A small average hemoglobin volume is common in small cell hypochromic anemia, such as iron deficiency anemia. A large average hemoglobin amount is common in megaloblastic anemia.