reticulocyte count

Reticulocyte count is the counting of reticulocytes and the maturation of reticulocytes. Reticulocytes are red blood cells that are not fully mature between the late red blood cells and mature red blood cells. After in vivo staining with Huang tar blue dye solution, a blue-green network structure can be seen in the cytoplasm. Reticulocyte erythrocytosis indicates that the erythroid hyperplasia of the bone marrow is strong, which is common in the poor, acute blood loss, iron deficiency, and young and poor. Reticulocyte reduction indicates that the bone marrow hematopoietic function is reduced, which is common in aplastic anemia and bone marrow anemia. Basic Information Specialist classification: cardiovascular examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: Common in aplastic anemia, hemolytic anemia regeneration crisis. Normal value: Adult: 0.005-0.015 Children: 0.02-0.06 Above normal: Commonly expressed in the formation of bone marrow erythropoiesis, common in hemolytic anemia and other diseases. negative: Positive: Tips: Do not eat too greasy, high-protein foods the day before the blood draw, avoid heavy drinking. Normal value Adult: 0.005 ~ 0.015. The absolute value (25 to 75) × 109 / L averages 60 × 109 / L. Children: 0.02 ~ 0.06. Clinical significance Abnormal results Heilmyer divides it into five types according to its developmental stage: Type O is a nucleated reticulocyte, and this type is found only in normal bone marrow. Type I red blood cells are almost filled with mesh fabrics, and this type is only found in normal bone marrow. Type II is located in the central line of the red blood cell, and begins to loose. This type is abundant in the bone marrow. The type III woven structure is sparsely arranged in an irregular branch shape, and a small amount is visible in the peripheral blood. The basophilic substance in type IV cytoplasm is rarely a single fine granule which can be short-filament, and most of the reticulocytes in normal blood are found in this type. In order to make full use of all the information about erythropoiesis activity obtained from the development of reticulocytes, it is necessary to determine the mature type of reticulocytes in addition to counting reticulocytes, which can be detected from normal blood in peripheral blood. Type III reticulocytes are about 0.2-0.3, and type IV is about 0.7-0.8, but type I and type II reticulocytes can also be detected in activated erythropoiesis and type III reticulocytes are significantly increased, which will produce red blood cells. Research provides good information and helps with clinical diagnosis. Reticulocyte erythrocytosis indicates a strong erythrocyte production of the bone marrow, which is common in hemolytic anemia, especially acute hemolysis (up to 0.6-0.8). Reticulocytes reached a peak 5 to 10 days after acute blood loss, and returned to normal after 2 weeks. Reticulocyte reduction is seen in aplastic anemia, hemolytic anemia regenerative crisis, typical aplastic anemia, reticulocyte count is often less than 0.005. The absolute value of reticulocytes below 15×109/L is one of the diagnostic criteria for aplastic anemia. People who need to be checked People with hemolysis and anemia symptoms. Low results may be diseases: high burn shock results may be diseases: aplastic anemia considerations Taboo before the test: Do not eat too greasy, high-protein foods the day before the test, to avoid heavy drinking. The alcohol content in the blood directly affects the test results. After 8 pm on the day before the medical examination, you should fast. Requirements for examination: When taking blood, you should relax your mind to avoid the contraction of blood vessels caused by fear and increase the difficulty of blood collection. Inspection process The peripheral blood mainly has ear lobe blood and fingertips to take blood. The baby can take blood from the heel. The earlobe has a lighter blood pressure, but the blood volume is less, especially those with smaller earlobes are more difficult to take blood. The blood pressure of the fingertips is more obvious, but the blood collection is more, especially for the blood routine test, the stable measurement results can be obtained. The skin should be cleaned before blood collection. Do not take blood immediately after entering the room in the cold outdoor winter. After the body is warm, especially the ear drops and hands should be warmed up. Do not use hot water to heat your hands before taking blood. Keep your fingers dry. If your fingertips have wounds, paronychia, redness or skin disease, avoid using this finger. Fingertip blood collection generally uses the ring finger, because the ring finger will not affect the daily function of the hand after piercing, of course, the middle finger or index finger can also be used, no special difference. When collecting blood in the ear, remove the earrings and other hanging ornaments on the earlobe. Do not hang up immediately after blood collection. After blood collection, apply sterile cotton blocks or other disinfecting hemostatic articles to pinch the needle and puncture the area. Do not touch the dirt. Do not wash your hands immediately. Not suitable for the crowd 1. Patients who have taken contraceptives, thyroid hormones, steroid hormones, etc., may affect the results of the examination and prohibit patients who have recently taken the drug history. 2, special diseases: patients with hematopoietic function to reduce disease, such as leukemia, various anemia, myelodysplastic syndrome, etc., unless the examination is essential, try to draw less blood. Adverse reactions and risks 1, subcutaneous hemorrhage: due to pressing time less than 5 minutes or blood draw technology is not enough, etc. can cause subcutaneous bleeding. 2, discomfort: the puncture site may appear pain, swelling, tenderness, subcutaneous ecchymosis visible to the naked eye. 3, dizzy or fainting: in the blood draw, due to emotional overstress, fear, reflex caused by vagus nerve excitement, blood pressure decreased, etc. caused by insufficient blood supply to the brain caused by fainting or dizziness. 4. Risk of infection: If you use an unclean needle, you may be at risk of infection.