Blood sugar measurement, the first blood drop or the second blood drop? Why?

The second drop of blood is more accurate; Because blood glucose needs to be sterilized when it is collected, the first drop of blood may be contaminated with disinfectant or alcohol, resulting in inaccurate results.

Try to choose the first drop of blood, because the results of the first blood are relatively accurate and not contaminated accordingly.

The second drop of blood will be more accurate, because the first drop of blood will be mixed with the disinfectant, so there will be an error.

The first drop of blood is more accurate because the first drop of blood can indeed detect blood sugar problems in the body.

1 There was little difference between the first and second drops, and there was no statistically significant difference in blood glucose.

China Medical University measured the blood glucose prespike 2 hours after fasting or 75g oral glucose tolerance test in 256 diabetic patients, and found that there was no significant difference between the blood glucose values of the first drop of blood, the second drop of blood and venous blood, that is, there was no significant difference in blood glucose levels in the body of the first drop of blood and the second drop of blood.

2 It is recommended to use the first drop of blood to measure blood sugar.

Because the first drop of blood is more convenient and quicker, it can save time and operation for doctors and patients, and it also allows patients to avoid the pain of a second blood sugar test, and saves medical resources.

However, if hands are not cleaned, a second drop of blood is recommended to test blood glucose to reduce errors caused by non-contamination.

3When measuring blood sugar, be sure to clean your hands. Wash your hands, especially the blood collection site, with soapy water, dry them with a clean cotton ball and disinfect them with 75% medical alcohol. Then the arm where the blood collection site is located will naturally hang down for a moment to make the fingertips congested, then gently massage the blood collection site, and after the needle is pricked, gently push the blood vessels on both sides of the finger to the front third of the finger, so that the blood can slowly overflow and then the blood can be collected.

Be careful not to squeeze your fingers too much, so as to avoid the interstitial fluid squeezing out and mixing with the blood, as there will be an error in the blood sugar value measured by the guide.

4. If fasting blood sugar is measured, you should not eat before the blood sugar test, and ensure sufficient sleep the night before the blood sugar test, and avoid emotional agitation, lack of sleep, physical fatigue, fever, strenuous exercise, etc., so as not to affect the measurement of blood glucose. Please follow your doctor's guidance on how to measure your blood sugar.

Many people with diabetes often check their blood sugar at home, which is very important to keep abreast of changes in blood sugar levels. It is necessary to master the correct method of self-measurement of blood glucose to ensure the accuracy and reliability of the test results.

People often ask: should I use the first or second drop of blood to measure blood sugar? It is generally recommended to wipe off the first drop of blood with a cotton swab and measure it with a second drop of blood, because it needs to be disinfected with alcohol before blood collection, and if the alcohol does not evaporate before blood collection, it may affect the measurement results.

However, some studies have found little difference in the results measured with the first or second drop of blood. If you use the first drop of blood, be sure to wait until the disinfectant alcohol has completely evaporated and your fingers are dry before pricking your hand to collect blood.

There are a few more important questions:

First, be sure to wash your hands before measuring blood sugar, which can not only reduce the risk of infection, but also help ensure the accuracy of the measurement results;

Second, choose the appropriate needle insertion depth according to your own ** situation (soft or rough), not too shallow or too deep;

Third, don't prick your fingers, taking blood on the side of your fingers will reduce the pain;

Fourth, before blood collection, you can rub your hands to increase the amount of blood in your fingers;

Fifth, try not to squeeze your finger too much if you have too little bleeding, which will affect the test result;

Sixth, the blood glucose meter should be calibrated regularly, the blood glucose test strip should be properly stored according to the requirements of the manual, and the blood glucose test strip and the blood glucose meter model must match.

Hebei Provincial People's Hospital, Guo Yifang).

Hyperglycemia can not be completely **, only through daily dietary intake to control blood sugar levels and avoid blood sugar rise, then you need to do a regular blood sugar test every day. It is very inconvenient to always go to the hospital for blood checks, and at this time we can prepare our own blood glucose meter for testing. So can the first drop of blood to measure blood sugar work?

There is controversy about whether to remove the first drop of blood, but if you measure your blood sugar at home, in fact, the first drop and the second drop do not need to be too entangled, and you can follow the regular blood collection method. A number of domestic studies have shown that after the hands are cleaned, the blood collection site is wiped with 75 alcohol and punctured after drying, and the first drop of blood, the second drop of blood and the venous blood collected are used for biochemical blood glucose monitoring and comparison, respectively. By dividing blood sugar into different sections more precisely, it can be observed that when the blood glucose value is not too high, the measurement of the first drop of blood is closer to the actual blood glucose value.

When the blood sugar level is too high, the measurement of the second drop of blood is more reliable. But when a diabetic suffers from hypoglycemia, a quick blood glucose measurement may overestimate the patient's actual blood sugar value, especially when using a second drop of blood.

There is no difference between the first and second drops of blood in blood glucose measurements. Usually, when using a fingertip to collect blood, the blood cells of the first drop of blood are easily destroyed due to actions such as disinfection, puncture, etc., and errors occur when checking the blood routine. In this case, a second drop of blood is usually used for testing.

However, blood glucose tests are not affected by these factors, but it should be noted that the blood collected from the fingerstick is a mixture of blood, blood sugar fluctuates widely, and venous blood tests are inaccurate. In general, it should be compared to venous blood glucose.

1.Disinfect with 75 percent alcohol. Alcohol disinfection has no effect on the rapid recovery of volatilization. If iodine is used for disinfection, the results may be affected. Also, when using alcohol, one must wait until the alcohol has evaporated before taking the blood.

2.Make sure that the blood is sufficient to drip into the test hole. If there is not enough or too much blood, it may affect the results.

3.Choose a test strip that matches your blood glucose meter, otherwise the results will also be inaccurate.

4.Avoid sticking in the same place all the time and do not reuse used lancets.

5.When it's cold, you need to soak your hands in hot water for a while so that the blood on your fingertips is in line with the blood in the veins, and the results are more accurate.

Diabetes. For today's people, we will not be strangers, for people with diabetes, it is necessary to have a blood sugar check every once in a while, therefore, many diabetic patients will have some instruments to detect blood sugar at home, but when checking, people should use the first drop of blood for testing, or use the second drop of blood for testing? Today we will take a look at whether the first drop of blood is more accurate when monitoring blood sugar, or is the second drop of blood more accurate?

Is blood sugar measured with the first or second drop of blood? Which result is more accurate?

For this issue, there may be some controversy, in many people's concept that the first drop of blood can really detect the normal blood value of the human body, but with the popularization of medical knowledge, many people think that the second drop of blood measurement, the result is more accurate, and in many hospital tests, most of them will also use the second drop of blood, why is this? Actually, there are 2 reasons:

1. When using the first drop of blood, sometimes in the process of collecting blood, the blood is contaminated, although it is said that when monitoring blood sugar, the hands will be washed and then tested, but washing hands can not remove a variety of bacteria on the fingers, and it may contaminate the blood, which will affect the blood sugar monitoring results.

2. In diabetic patients, most people like to use the second drop of blood for measurement, because the results of the second drop of blood measurement are often more accurate, the result data will be more balanced, and the real results of blood test monitoring are more credible. That's why when testing in a hospital, doctors prefer to use the original image of the second drop of blood.

There are 2 things to do when taking blood:

1. Clean thoroughly.

If the blood is taken after the blood collection site is cleaned, the blood will be diluted and the blood sugar will be low, and if the disinfection is not thorough, sugary substances may be left behind, which may lead to high blood sugar.

2. Pay attention to the correct way of disinfection.

When disinfecting the blood collection site, disinfect with alcohol cotton balls, and do not disinfect with iodine-containing disinfectants, such as iodine wine.

Iodophor, etc., this kind of disinfectant can easily cause high blood sugar.

Testing blood sugar is often the second drop of blood, because there may be bacteria in the first drop of blood, or the first drop of blood, which is not representative of the blood sugar level in your entire blood, so the second drop of blood should be used.

The second drop of blood to test blood sugar is more accurate because the first drop has more influencing factors.

The second drop of blood is more accurate, 1. When taking blood, wash the blood collection site and wait for the water to dry the blood collection. 2. Pay attention to disinfection of blood collection parts, disinfect with alcohol cotton balls, and do not disinfect with iodine-containing disinfectant, which can easily lead to high blood sugar.

Generally speaking, the first drop of blood is better, and to measure the blood sugar value in the hospital, the doctor generally takes one drop is enough

Normally, just use the first drop of blood. It is true that when we are in the hospital, we often see that doctors will use the second drop of blood when measuring blood sugar for us, this is because doctors will avoid many professional factors that affect the accuracy of blood sugar when they are trained, so they try to use the second drop of blood in order to ensure accuracy, but when we measure blood sugar at home, the gap between the first drop of blood and the second drop of blood is almost not too big, and there is no obvious difference, and many patients use the second drop of blood. It will prick the finger very hard, which also causes varying degrees of pain to the patient, so if we don't have special needs, we can use the first drop of blood. However, in order to ensure the accuracy of the first drop of blood, we need to pay attention to the following points when testing blood sugar:

1. Ensure the cleanliness of your fingers

First of all, when we are testing, we should ensure the cleanliness of our fingers, because we all know that if the fingers are not clean enough, it will definitely affect the results of the test, and indeed everyone knows to wash your hands before the test, but I want to say that many friends start the test without wiping the water on their hands after washing their hands, in fact, this will also affect the test results, because the moisture on the hands will dilute the concentration of blood when we test.

2. Make sure that there are no sugary substances when taking blood

If we have just touched some sugary substances, then we must pay attention to deal with these substances before testing, because if we do not deal with them, the sugary substances on our hands are likely to affect the results of the test, that is to say, the results of the test are likely to show that the blood sugar content is high, this kind of misleading impact is very big for us, especially many patients will cause some panic.

3. Do not use iodine wine and iodine for disinfection

Many friends like to use iodine wine iodophor disinfection before testing blood sugar, in fact, this is also an improper practice, because iodine wine iodophor contains more or less sugar, if we use iodine wine iodophor disinfection before the test, it is very likely that the test results show that the blood sugar content is too high, so the test is not very accurate.

Diabetes, as a disease of wealth, is now plaguing many people's lives. According to the incomplete statistics of China's health department, there are as many as 730,000 new diabetics in China every year, which is a very terrifying number, and patients will be very painful after suffering from diabetes, and with complications, it is likely to endanger our lives. So how should we prevent diabetes or how to **diabetes?

In fact, whether it is prevention or **, what we have to do is to observe whether our blood sugar is at a normal peak. Because it is more troublesome to go to the hospital for a blood test, most people will choose to buy a blood glucose meter and measure their blood sugar at home, so at this time there is a question, when measuring blood sugar by ourselves, should we use the first drop of blood or the second drop of blood? Today, I will give you a detailed analysis.

First of all, we need to understand that the medical professionals give us the opinion that it is best to use the second drop of blood, so why use the second drop of blood? This starts with the steps of measuring blood sugar, when we usually use alcohol to disinfect our fingers, and then use a probe to take blood from our fingers. Because our fingers are already contaminated with alcohol, it is likely that the first drop of blood will coincide with the alcohol, and that the first drop of blood will also contain some of the grease on the fingers, which may cause inaccurate detection.

So the health care provider will advise us to use the second drop of blood.

Secondly, in the measurement process, we also passed a comparison, that is, the blood sugar test of the first drop of blood and the second drop of blood respectively, and found that the blood glucose values of the two drops of blood were almost the same. Therefore, many people will also use the first drop of blood when measuring blood sugar, but for the sake of prudence, it is recommended that everyone should use the second drop of blood.

In addition, one thing that should be reminded is that when measuring blood sugar, we must grasp a time period, that is, from 9 o'clock in the night before to about 6 o'clock in the morning on the second day, it is best not to eat or drink anything, so that blood sugar will be measured more accurately.