The blood sugar test is not accurate. You may have done these things wrong.

Diabetic patients easily fall into some misunderstandings during daily blood glucose monitoring, which leads to inaccurate blood glucose measurement. This article lists several common misunderstandings among diabetic patients during monitoring. I hope it can be helpful to all diabetes friends.

 

Eat less on purpose before taking a blood sugar test

 

Everyone has heard the fable of the bell thief who covered his ears with his hands and thought it was stupid to think that he could successfully steal the bell by blocking his ears with his hands. However, in the management of diabetes, many patients still commit the crime of stealing the bell. Mistakes like everyone else.

 

In order to make the blood sugar value she monitors "good-looking" but also record it truthfully, Aunt Zhang came up with a way to eat less before each blood sugar test. Although it seems that Aunt Zhang's blood sugar is controlled well, this does not truly reflect her blood sugar control. The doctor needs to guide Aunt Zhang's diet, medication, etc. based on her blood sugar situation. However, Aunt Zhang's "faking" behavior It is difficult for doctors to give correct guidance to Aunt Zhang.

 

Patients must eat as usual before the examination, and tell the doctor whether they have done strenuous exercise, smoked, drank stimulating drinks (such as coffee), and taken vitamin C (vitamin C has strong reducing properties and can Chemically reacts with certain types of blood sugar and urine glucose test strips, affecting the accuracy of test results), etc., and helps doctors analyze test results.

 

Only monitor fasting blood glucose

 

A large number of people with diabetes usually only monitor fasting blood sugar, and basically rely on guesswork for postprandial blood sugar. As long as they don't feel uncomfortable after a meal, they won't monitor it. Some people believe that postprandial hyperglycemia is caused by diet. As long as you control your diet properly every day, your blood sugar will not be high. Even if your blood sugar is high after a meal, your blood sugar will slowly come down as the food is digested and absorbed in the body. , no monitoring is necessary.

 

In fact, postprandial hyperglycemia has a great impact on human health. Postprandial hyperglycemia is an independent risk factor for macrovascular disease. If postprandial blood sugar can be controlled well, cardiovascular events can be effectively prevented. Studies have shown that for every 1 mmol/L increase in blood sugar 2 hours after a meal, the threat of death is equivalent to a 7 mm Hg increase in systolic blood pressure in patients with hypertension.

 

Similarly, postprandial blood sugar is also related to the occurrence of diabetic microvascular complications. Studies have found that postprandial hyperglycemia increases the risk of retinopathy in diabetic patients and accelerates the development of retinopathy. Therefore, diabetic patients should strengthen post-meal blood sugar monitoring to prevent diabetic complications.

 

Diabetic patients not only need to regularly monitor postprandial blood sugar, but also understand the control range of postprandial blood sugar levels. "China Type 2 Diabetes Prevention and Treatment Guidelines (20132017)" points out that the blood sugar of patients with diabetes should generally be controlled below 10 mmol/L 2 hours after a meal. Especially for elderly patients with diabetes or patients with serious complications, blood sugar control should be relaxed. standard. However, for patients under middle age and those who are not seriously ill, since mild hyperglycemia has adverse effects on blood pressure and cardiovascular disease, it is necessary to control postprandial blood sugar below 7.8 mmol/L as much as possible.

 

Self-reported assessment of blood sugar levels

 

It is difficult to correctly perceive the level of blood sugar by yourself. When the blood sugar of a diabetic patient is slightly higher than normal, you may not feel it, but your body is already changing and cells and blood vessels have been damaged; when the blood sugar is much higher than normal, you may not feel it. You will feel mild symptoms caused by high blood sugar, such as fatigue, fatigue, irritability, etc., but many people attribute these symptoms to age or stress. If blood sugar stays like this for a long time, it will develop into eye, kidney and Nerve damage.

 

If your blood sugar level is very high, you may feel like you are urinating too much - you may get up to urinate at night, you may feel very tired and moody, and your family may think it is caused by menopause or depression. Many people attribute the symptoms caused by high blood sugar to some other common causes, while ignoring the harm that high blood sugar causes to the body. In order to prevent high blood sugar from affecting the body without knowing it, diabetic patients must monitor blood sugar regularly and never rely on self-feeling to evaluate blood sugar.

 

If a diabetic patient has symptoms caused by high blood sugar but is not aware of it (failure to test blood sugar), it can lead to various complications and even shorten life. Therefore, diabetic patients must not assess blood sugar levels by feeling, but should monitor blood sugar regularly.

 

Test urine sugar instead of blood sugar

 

Some diabetic patients think that taking finger blood to measure blood sugar is not only expensive but also requires pricking their finger every time, which is a rejection mentality. At the same time, urine sugar is also one of the testing methods for diabetes. The method of testing urine sugar is much simpler. Therefore, urine sugar testing is used instead of blood sugar. As long as the urine sugar is negative, it means that there is no problem with blood sugar.

 

Positive urine sugar is an important clue for diagnosing diabetes. When blood sugar exceeds a limit, which is the sugar threshold, urine sugar will appear. However, urine glucose cannot accurately reflect blood glucose values because it is affected by factors such as urine output, kidney function, and renal glucose threshold. At the same time, it is not helpful in detecting hypoglycemia; in some special circumstances, such as increased renal glucose threshold (elderly patients) There is no point in doing a urine glucose test when the baby is pregnant) or reduced (pregnancy). The significance of urine glucose testing is that when self-monitoring of blood glucose is not possible due to limited conditions, and kidney function is relatively stable, self-monitoring of urine glucose can be performed as a temporary alternative.

 

Blood sugar 2 hours after a meal is blood sugar 2 hours after a meal

 

Aunt Song doesn’t know enough about the 2-hour blood sugar after a meal. She thinks that the 2-hour blood sugar after a meal is the 2-hour blood sugar after a meal. Every time she finishes the last bite of the meal, she starts timing and measures the blood sugar on time after 2 hours. However, Aunt Song eats slowly. , every time I test my blood sugar 2 hours after a meal, it’s 3pm. It wasn't until I was chatting with a doctor one day and mentioned that she tested her blood sugar 2 hours after a meal at 3 o'clock every day, and the doctor asked her when she ate, that she discovered the problem with Aunt Song.

 

Many people are confused about the timing of blood sugar 2 hours after a meal. They don't understand why the timing should start from the first bite of the meal, rather than during the meal or after the meal? Jia Kebao, deputy chief physician of the Endocrinology Department of Beijing Xuanwu Hospital, said that timing starts from the first mouthful of rice as a standard because different people have different eating times. Some people only take 10 minutes to eat a meal, while others may It takes 50 minutes, especially if you eat out, it will take longer. If you start timing after the meal, the peak of blood sugar rise will have already passed.

 

Once the condition is stable, there is no need to monitor blood sugar

 

Many diabetic patients want to get rid of the "hat" of diabetes. Once the condition is stable, they feel that their body has recovered. They no longer need to continue the "tedious" operation of monitoring blood sugar. They just need to take medicine according to the doctor's instructions every day. .

 

Everyone knows that human blood sugar levels are affected by various factors such as diet and exercise, so blood sugar is constantly changing throughout the day. Situations such as illness, anger, strenuous or too little exercise, etc. can cause blood sugar fluctuations. At this time, blood sugar should be monitored in a timely manner to avoid sudden increases in blood sugar and to prevent hypoglycemia. Therefore, even patients with stable conditions need to monitor blood sugar. "China Type 2 Diabetes Prevention and Treatment Guidelines (Popular Science Edition)" points out that diabetic patients gradually reduce the number of measurements after their condition stabilizes, generally 4 to 8 times a week, and you need to consult a doctor for specific monitoring plans.