abnormal red blood cell size

The normal red blood cell size is basically the same, and the diameter is about 6-9 μm. When various anemias occur, the size of red blood cells can be changed, and the red blood cell size is uneven. Those with red blood cell diameter greater than 10 μm are called red blood cells, those with greater than 15 μm are called giant red blood cells, and those with less than 6 μm are called small red blood cells. Basic Information Specialist classification: cardiovascular examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Tips: After 8 pm on the day before the medical examination, you should start fasting for 12 hours, so as not to affect the test results. Normal value The diameter is 6 to 9 μm. Clinical significance Abnormal results: (1) small red blood cell diameter <6μm iron deficiency anemia, subacute or chronic inflammation, thalassemia, iron erythrocyte anemia. (2) Large red blood cell diameter > 10 μm nutritional megaloblastic anemia, megaloblastic anemia in pregnancy, pernicious anemia, liver disease, erythroleukemia, post-gastrectomy, some hemolytic anemia, aplastic anemia. (3) Giant red blood cell diameter>15μm, super giant red blood cell diameter>20μm megaloblastic anemia, pernicious anemia. (4) megaloblastic anemia, iron deficiency anemia, thalassemia, hemolytic anemia, and myelofibrosis. People who need to be examined have anemia symptoms. Low results may be diseases: iron deficiency anemia, high nutritional anemia results may be disease: nutritional megaloblastic anemia considerations An increase in the count amount can relatively reduce the error. The red blood cell count decreased from 5 pm to 7 am and after meals, up to 10%, and bed rest can be reduced by 5.7% compared with normal activities. Therefore, time should be properly considered when evaluating two blood test results. Factors such as diet and bed rest. Red blood cell counts are highly prone to errors. Intravenous blood collection, long-term ligation of the tourniquet can cause a false increase, and the pipette is unclean or inaccurate, and the count will increase or decrease. Draw up the diluent, now use the manual dosing device, the capacity should be calibrated before use. The counting board should strive to purchase the exact one. Count enough when counting. If you pay attention to it, the results obtained by the manual method still have good accuracy and can be used to correct the automatic counter. Inspection process The examination process: blood is drawn, blood is taken for examination, and venous blood is generally taken, and blood is drawn by a doctor or a nurse. The amount of blood drawn is determined according to the difference of the test content and the number of items. The blood volume is usually 2-20 ml, and the maximum is no more than 50 ml. Then the doctor observes the red blood cell size with a microscope. Not suitable for the crowd Hemophilia and diffuse intravascular coagulation. Adverse reactions and risks Infection: Do not touch the dirt after blood collection. Do not wash your hands immediately to avoid infection.