Diet should be light three to five days before physical examination. Do not eat bloody food such as pig liver and pig blood. Please completely fast (including drinking water) after 0/2 o'clock the night before the examination.

Before the blood test on the day of physical examination, if you feel thirsty, you can drink a small amount of boiled water, purified water and mineral water. Remember not to drink too much water, and the total water consumption should not exceed 100 ml. Avoid strong tea, coffee and other irritating drinks.

Extended data:

Do not eat a high-fat and high-protein diet 2-3 days before physical examination. Because eating high-fat and high-protein foods will increase the metabolic burden of the body, temporary liver dysfunction may occur, and even the result of hyperlipidemia and cholesterol.

If you eat a lot of iron-rich food or drugs before doing occult blood test, it will affect the results of gastrointestinal examination and appear false positive. Therefore, it is not advisable to eat all kinds of animal blood and animal liver before examination.

Before physical examination, you can choose chicken (peeled), duck (peeled), beans and bean products, and vegetables without chlorophyll, such as cauliflower, cabbage, bean sprouts, wax gourd, radish, carrot, lotus root, potato and other ingredients.

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