Can I drink water while fasting for a blood test?

We all know that if a blood test is needed during a physical examination, the patient is required to fast and not drink water for eight hours before the test, because eating within eight hours before the test will have an inaccurate impact on the test results. After the blood test, the patient needs to eat something to replenish energy to replenish the blood lost in the body. So, can the patient drink water if he is hungry during the blood test on an empty stomach?

Generally speaking, you cannot drink water during a physical examination on an empty stomach.

The fasting requirement is that you should not eat or drink water within 10 to 12 hours to avoid the possible impact of eating on the physical examination results.

However, it does not mean that you cannot drink water. If you feel very thirsty, you can drink a small amount of water to ensure the normal water supply of the body, but not too much, so as not to dilute the blood and affect the physical examination results. In addition, if you have a chronic disease that requires long-term treatment, you should take your medication regularly without interruption, and you can take it with a small amount of water.

There are some other things to note during the physical examination:

1. You should not attend any dinner parties three days before the physical examination. Foods that are too sweet, too salty, or too greasy should be avoided. Alcohol is prohibited and a vegetarian diet should be maintained as much as possible. It is generally required to fast after 8 o'clock in the evening and go to bed early.

2. Do not eat breakfast on the day of the physical examination, and undergo blood drawing and abdominal B-ultrasound examination on an empty stomach. The physical examination center arranges physical examination breakfast.

3. When performing gynecological B-ultrasound on females or prostate B-ultrasound on males, you need to hold your urine.

4. Women need to urinate completely when undergoing a gynecological examination.

5. Women should not undergo gynecological examinations or laboratory urine tests during menstruation; pregnant women should not undergo X-ray examinations.

6. After drawing blood from the vein, press the puncture point of the needle with a cotton ball for two minutes. Do not press or rub it to prevent the formation of hematoma.

7. When undergoing a physical examination, you should relax naturally, keep a calm mind, and provide the doctor with true medical history information and your physical condition or feelings.

8. When the test results indicate "abnormalities", do not be afraid to seek medical attention. Consult a doctor in a timely manner and seek re-examination or treatment according to the doctor's advice.

9. You should insist on completing the required physical examination items to avoid missed diagnosis