Self-monitoring of blood glucose is an integral part of comprehensive treatment of diabetes, Can reflect the real-time blood sugar level, It is used to evaluate blood sugar before and after meals, exercise, meals, mood changes, etc. and the effects of drugs on blood sugar. It helps doctors to judge the disease, And formulate individualized treatment plans, To improve the effectiveness and safety of treatment. Portable rapid blood glucose meter is one of the essentials for diabetic patients. Sugar friends can carry out blood sugar monitoring at home. However, a considerable number of patients’ self-measured blood sugar will [fool] people, which is quite different from their real blood sugar. This is not only not conducive to adjusting the treatment plan, but also may mislead doctors and patients. Clearly, it is a blood sugar meter with excellent quality. How can this happen? One of the possible reasons: Improper maintenance of instruments, dust, fibers and other sundries in the environment, Inevitably contaminate the blood glucose meter, If not properly maintained, It will definitely affect the blood glucose test results. 1. Wipe the blood glucose meter around the test area regularly, It should be gently wiped with cotton swabs or soft cloth dipped in clear water once a month or every half month. Never use alcohol or other organic solvents. 2. Regularly calibrate the blood glucose meter with the standard glucose solution provided by the manufacturer or the standard test strip attached to the blood glucose meter. Usually, it is good to calibrate the blood glucose meter every two months. If there are any of the following circumstances, it is necessary to calibrate the blood glucose meter in time: (1) before the first use; (2) Every time a new test paper is used; (3) Doubts about the measurement results; (4) When the blood glucose meter falls and touches. 3. Must compare and suggest to take the blood glucose meter when going to the hospital for follow-up, The nurse drew venous blood, Take your own finger blood, Compare the two numbers. Venous blood is measured by separating plasma. The blood glucose meter uses peripheral whole blood, The blood sugar level of whole blood is generally about 15% lower than that of plasma. It can be converted when comparing. For example, the venous test is 10 mmol/L, and the whole blood is almost 8.5 mmol/L. According to the current regulations, the allowable error between the test results of blood glucose meters (whole blood) sold on the market in China and the test results (venous blood) by laboratory reference methods is controlled in the following ranges: (1) when the blood glucose is less than 4.2 mmol/L, at least 95% of the test results are within the range of ± 0.83 mmol/L; (2) When blood glucose ≥ 4.2 mmol/L, At least 95% of the test results are in the range of ± 20%. 4. Test strip Test strip as a partner of blood glucose meter, It is easily deteriorated by temperature, humidity, light, chemicals and air oxidation. It also requires maintenance. Once the test paper deteriorates, It will seriously affect the test results. Therefore, The test paper should be moisture-proof and light-proof when stored. Put it in a dry and cool place. When taking the test strip, Do not touch the test area of the test strip with your fingers. After each test strip is taken out, Close and tighten the lid of the test paper box. When using the test paper, first observe whether there is any color change in the test area of the test paper, and pay attention to whether it exceeds the validity period. If there are these situations, the test paper needs to be changed. The second possible reason is that the blood sample collection is not standardized. Blood sample collection is the key step for blood sugar detection. Unfortunately, Many patients do not take blood samples properly, The blood glucose values obtained are also unreliable. The correct method of collecting blood samples is: 1. Before washing hands and preparing to use blood glucose meter, Clean the blood collection site, Wash hands (especially blood collection parts) with soap and warm water, And dry it with a clean cotton ball. Then the arm where the blood collection site is located will naturally droop for a moment. Then massage the blood collection site. 2. Collect and use an appropriate blood collector to obtain sufficient blood samples. Do not squeeze the blood collection site to obtain a blood sample, Because of the entry of interstitial fluid, Will dilute the blood sample, Interfering with blood glucose test results, A sufficient amount of blood should be taken at one time. In addition, It is recommended to gently wipe off the first drop of blood after blood collection with a cotton swab. Because the first drop of blood often contains more tissue fluid, It may also affect the results. 3. Environmental tests should be conducted at room temperature of 10 ℃ ~ 40 ℃, When the humidity is 10% ~ 80%, Do not press or move blood glucose test paper or blood glucose meter during the process, Avoid electromagnetic waves (such as keeping away from cell phones, radios, televisions, computers and microwave ovens) and sunlight, So as not to affect the determination results. The third possible reason is: There are many external interference factors. 1. Monitoring time, self-blood sugar monitoring, Generally, blood sugar is monitored on an empty stomach in the morning, before dinner and after three meals. However, some sugar lovers exercise or do housework in the morning. Blood sugar was detected even later. Although it was on an empty stomach at this time, However, the measured blood sugar level has been disturbed by the outside world, Can’t objectively reflect fasting blood glucose level. The correct approach should be: Fasting blood glucose: Immediately after getting up in the morning, Or after fasting and resting for 8-10 hours, Measure it before 8 o’clock the next morning. Postprandial blood sugar: It refers to 2 hours from the first meal. 2. Mood swings once had such an example: When an old diabetic returned to the clinic, Its postprandial blood glucose level can always be controlled below 10 mmol/L, However, it reached 13.1 mmol/L on that day. Asked if there was no abnormality in diet and exercise on that day, Only in the morning can I have conflicts with my family, In a depressed mood, This causes blood sugar to fluctuate. Some emotional changes also affect the blood sugar test results. Such as emotional tension, anger, panic, etc., It is possible to increase blood sugar fluctuation, Therefore, we should try our best to maintain emotional stability and peace of mind before measuring blood sugar. In addition, Glycosylated hemoglobin can reflect the body’s blood sugar control situation in the near future for 2-3 months, and has been used as a gold standard for evaluating the long-term blood sugar control situation clinically. The index detection does not need the patient’s fasting, can collect blood at any time, is not affected by lifestyle changes such as diet and exercise, and is difficult to [fool] people. It is recommended to detect it once every 3 months. Responsible editor: Feifei
