Mean corpuscular hemoglobin content (MCH)

The mean erythrocyte hemoglobin content (MCH) refers to the average amount of hemoglobin contained in each red blood cell, in picograms (pg), MCH = Hb content / megaherms, clinically used for morphological classification of anemia. The number of red blood cells was counted simultaneously in the same anticoagulant specimen, and the amount of hemoglobin and hematocrit were measured. The average erythrocyte hemoglobin content can be further calculated indirectly by the three sums. Basic Information Specialist classification: cardiovascular examination classification: blood examination Applicable gender: whether men and women apply fasting: fasting Analysis results: Below normal: The reduction is simple small cell anemia, small cell hypochromic anemia, also seen in iron deficiency. Normal value: 8:26-38pg Above normal: Elevation is often a large cell anemia, seen in pernicious anemia. negative: Positive: Tips: After 8 pm on the day before the medical examination, you should fast, so as not to affect the detection of indicators such as blood glucose in the second sky. Normal value Reference value male 26 ~ 38pg, female 26 ~ 38pg, newborn 26 ~ 38pg. Clinical significance Abnormal results: Reduction is simple small cell anemia, small cell hypochromic anemia, also seen in iron deficiency, chronic blood loss, oral inflammatory diarrhea, gastric acid deficiency, pregnancy, thalassemia, iron erythrocyte anemia, megaloblastic anemia. Elevation is often a large cell anemia, seen in pernicious anemia, folate deficiency, chronic hunger, reticulosis, hypothyroidism, and aplastic anemia. The people who need to be examined have high cold, sudden fever, palpitations, shortness of breath and other symptoms. Low results may be diseases: high iron deficiency anemia results may be disease: aplastic anemia considerations First, the precautions before blood draw: 1, do not eat too greasy, high-protein food the day before the blood, to avoid heavy drinking. The alcohol content in the blood directly affects the test results. 2. After 8 pm on the day before the physical examination, fasting should be done to avoid affecting the detection of indicators such as blood glucose in the second sky. 3, should relax when taking blood, to avoid the contraction of blood vessels caused by fear, increase the difficulty of blood collection. Guests with a history of fainting should explain in advance and we will make special arrangements. Second, after blood draw should pay attention to: 1. After blood is drawn, local compression is required at the pinhole for 3-5 minutes to stop bleeding. Note: Do not rub, so as not to cause subcutaneous hematoma. 2, the pressing time should be sufficient. There is a difference in clotting time for each person, and some people need a little longer to clotting. Therefore, when the surface of the skin appears to be bleeding, the compression is stopped immediately, and the blood may be infiltrated into the skin due to incomplete hemostasis. Therefore, the compression time is longer to completely stop bleeding. If there is a tendency to bleed, the compression time should be extended. 3, after the blood draw symptoms of fainting such as: dizziness, vertigo, fatigue, etc. should immediately lie down, drink a small amount of syrup, and then undergo a physical examination after the symptoms are relieved. 4. If there is localized congestion, use a warm towel after 24 hours to promote absorption. 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 not more than 50 ml, and then the doctor performs calculation and examination. Not suitable for the crowd Have a coagulopathy such as hemophilia. Adverse reactions and risks Discomfort: There may be pain, swelling, tenderness, and visible subcutaneous ecchymosis at the puncture site.