When drawing blood on an empty stomach, you must not touch the water?

       An empty stomach is an empty stomach without food.

　　Generally speaking, the specific requirements of laboratory examination for fasting are:

　　In the night before the day before blood drawing, the physical examination personnel shall maintain normal living habits, maintain normal diet and make the diet light.

　　Don't drink, coffee, strong tea, and have a good rest.

　　After getting up the next day, do not eat breakfast, drink less or no water, do not do morning exercises, and go to the hospital quietly to wait for blood collection.

　　This blood sample is a good sample to accurately reflect the disease.

　　Why do I need an empty stomach exam?

　　Fasting blood refers to venous blood collected before meals in the morning, because various components of the collected fasting blood are more stable and objective.

　　The biggest advantage of fasting blood test is that it can avoid the influence of dietary factors, make the test results more objective and truly reflect the biochemical changes of the body.

　　If blood is taken after eating, the biochemical components in the blood will change temporarily, and the measured results cannot objectively reflect the real situation of the body, affecting the accuracy of clinical judgment.

　　So back to this topic, we really need to keep away from water for fasting inspection. Almost 90% of our friends think that they don't eat anything on an empty stomach, including drinking water.

　　At the same time, there are also a few friends who feel that fasting examination is not related to drinking water.

　　In fact, the fasting test does not require that you never drink a sip of water.

　　On the day of physical examination, you can drink a small glass of water (about 200 ml) to ensure that the human body gets the necessary water.

　　Since it is still some time before you arrive at the physical examination center, your body can completely absorb water, so it will not affect the physical examination results.

　　However, after arriving at the physical examination institution, you cannot drink water, because there are routine blood and urine tests in the physical examination items, and drinking water will have a certain impact on the results of these tests. For example, a complete fasting examination item can drink water and eat.

　　The development of drinking sugary drinks on an empty stomach will cause a sudden rise in blood sugar, especially within a few hours before the physical examination blood drawing, so we'd better not drink sugary drinks to avoid affecting the physical examination data.

　　There is also a particular time for fasting blood glucose examination. The time should be 8-12 hours after the first day's meal, and at most 12 hours.

　　After a long time, the blood sugar is inaccurate.

　　Some different patients think that as long as they don't eat breakfast, the idea of going to check at 8:00 a.m. or 10:00 a.m. and blood sugar is also incorrect.

　　The human body has a strong self-regulation function. When the human body is hungry, all functional indicators in the body will change, so the blood samples collected will be distorted, and the results may be "normal" in quantity.

　　But it may hide the patient's true condition.

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