You should not drink alcohol the day before the physical examination, because after drinking alcohol, the results of the physical examination may be affected. Especially for blood tests, the results may be inaccurate due to alcohol consumption, especially for sensitive indicators such as liver function transaminases, triglycerides, uric acid and other indicators. Drinking alcohol may cause these results not to be displayed correctly, or get an inaccurate result. If the physical examination will check the gastroscopy, after drinking alcohol, the alcohol has stimulated or even hurt the gastric mucosa, when the gastroscopy is done and found to show surface inflammation or even bleeding. It is advisable for patients not to drink before the medical examination in order to reflect the most realistic state of health.