"I can't even drink water in the morning for a physical examination?" Let's see what the experts say

Whether drinking a sip of water in the morning has an effect on blood tests depends on the blood test items. Generally, blood tests include routine tests, full biochemical tests, serological tests, etc. Drinking a sip of water in the morning generally has no effect on routine tests and serological tests, but may have an effect on biochemical tests.

The specific analysis is as follows: 1. Routine examination: Routine examination includes blood routine, blood type, immature cells, erythrocyte sedimentation rate, etc. If the patient is undergoing routine examination, drinking a sip of water in the morning generally has no effect on blood drawing. 2. Full biochemical examination: Full biochemical examination includes liver function, kidney function, electrolytes, blood lipids, etc. If the patient drinks a sip of water in the morning, it may have a certain impact on the test results of liver function, kidney function, etc.

3. Serological examination: Through serological examination, we can understand the titers of various antibodies, such as hepatitis B virus antibody, hepatitis C virus antibody, AIDS antibody, syphilis antibody, etc. If the patient is doing a serological test, drinking a sip of water in the morning generally has no effect on the blood test. However, it is recommended that patients fast as much as possible before blood draw. Generally speaking, the test results are more accurate when fasting.

The day before the physical examination, you should eat a light diet, avoid spicy food, and avoid eating seafood with shells, so as not to increase uric acid and affect urine testing. At the same time, do not drink alcohol or smoke. You also need to get enough sleep the day before and avoid staying up late. On the day of the physical examination, you need to fast and try to wear loose clothes that are convenient for the physical examination.