Clinical significance of blood analyzer
1. The blood analyzer is mainly used to detect various blood cell counts, leukocyte differential count and hemoglobin content.
2. Hematocrit: Obtained from the average red blood cell volume multiplied by the red blood cell count.
3. Red blood cell distribution width: represents the degree of consistency of red blood cell size. When the red blood cell size is uneven, the red blood cell distribution width value increases, such as various types of nutritional deficiency anemia.
4. The three average indices of red blood cells are used for the identification of anemia types.
(1) MCH: increased in megaloblastic anemia, decreased in iron deficiency anemia, chronic blood loss anemia, uremia, chronic inflammation.
(2) The average volume of red blood cells: increased in hemolytic anemia, megaloblastic anemia; decreased in severe iron deficiency anemia, hereditary spherocytosis.
(3) MCHC: decreased in chronic hemorrhagic anemia, iron deficiency anemia; a variety of diseases can be in the normal range. The megaloblastic anemia, the average volume of red blood cells increases, the average hemoglobin content of red blood cells increases, the average hemoglobin concentration of red blood cells is normal, and the distribution width of red blood cells increases.
5. Average platelet volume: The average volume of each platelet, the size of which is related to its function.
(1) increased: seen in primary thrombocytopenic purpura, late pregnancy with edema and proteinuria.
(2) Decreased: seen in non-immune platelet destruction, aplastic anemia, thrombocytopenic recurrent infection syndrome, chronic myeloid leukemia.