Alcohol can have an effect on liver function and blood pressure, so if you drink alcohol before the physical examination, it may cause abnormal liver function and lead to inaccurate results. Drinking alcohol can also cause changes in blood pressure, so drinking alcohol the day before the physical examination can affect the results of the physical examination, and the person being examined should not drink alcohol. The night before the physical examination should be a light diet, do not eat greasy, fatty food, such as pig’s blood, pig liver, etc.. Especially after consuming pig’s blood and liver, there is a possibility of positive occult blood in the routine stool test, which will affect the normal test results.