Does drinking a few sips of water before a physical examination have a big impact?

Many people do not pay much attention to their health during physical examinations. They always think that physical examinations are just routine checks, and it does not matter whether they eat breakfast or drink water in the morning. Generally, they are not allowed to eat breakfast during physical examinations, because eating breakfast is likely to cause problems with their body or problems with the results of the examination. In addition, you can drink water before the physical examination if the doctor recommends it, but you cannot drink water if blood tests are required.

Can I drink water before a physical examination? 1. When can I drink water?

You can actually drink water before the physical examination, but there is a limited time. If you drink water the night before the physical examination, the amount will not have much impact, but don't drink too much water. It is not good to drink too much at one time. You can also drink a small amount of water after getting up in the morning on the day of the physical examination, because many people have the habit of getting up and drinking water. They will feel more or less uncomfortable if they have not drunk enough water all night, so a small amount of water will not affect the results of the examination.

Can I drink water before a physical examination? 2. When can I not drink water?

You should not drink water about an hour before the actual physical examination, otherwise it will affect the test results. Of course, you also need to check the specific items of the test. If it is hepatitis B five items, etc., the impact on these items will not be very large. And you also need to see how much water you drink. If it is a little bit, it will not have any effect. Most of the water will stay in the digestive tract and will not enter the blood circulation.

What are the taboos to pay attention to before the physical examination?

Avoid drawing blood too late

During the day, human metabolism always fluctuates, and the metabolic rate is not at a constant level. Therefore, physical examinations and tests require fasting blood samples to be collected between 7:30 and 8:30 in the morning, and no later than 12:00. If the test is done too late, the test value may be distorted due to the influence of physiological endocrine hormones in the body.

Avoid excessive fasting

In order to ensure accurate blood test results, many blood tests require patients to fast. But excessive fasting can also affect the test results. If the fasting time reaches more than 18 hours, some tests will have abnormal results. For example, serum bilirubin may increase due to longer fasting time, and blood sugar may decrease to hypoglycemia due to long fasting time. The fasting standard is: the night before blood collection, try to maintain your normal living habits, eat light meals, do not drink alcohol, and do not drink coffee or strong tea after meals. After getting up the next morning, do not eat breakfast, drink little or no water, do not do morning exercise, and calmly go to the hospital to wait for blood drawing.

Avoid greasy food

Diet is the most important factor affecting blood lipids. Blood lipid testing requires fasting for 12 hours. Generally, after dinner, do not eat any other food except drinking water. In addition, to ensure the objectivity and accuracy of the physical examination results, the examinee must eat less or no high-fat foods and avoid drinking alcohol within 3 days before the examination.