How should an empty stomach physical examination be done?

An empty stomach means not eating for at least four hours.

During physical examination, the items that need fasting examination are: blood test, fasting blood glucose and B-ultrasound.

When taking blood for three antibodies, liver function, renal function, biochemical examination, blood sugar test, glucose tolerance test and blood serological examination, it is required to take blood tests on an empty stomach in the morning.

This is because-

1) If the method used for each test is different, the normal value will be different. Because the body is in a relatively stable basal metabolic state on an empty stomach, the influence of factors such as diet can be ruled out, so an empty stomach blood test can reflect the real situation in human blood.

2) Avoid the influence of eating a variety of foods on some components in the blood. After eating, food is chewed and digested by the mouth, digested and absorbed by the gastrointestinal tract, and then transported to various tissues and organs by blood. Therefore, some ingredients in food enter the blood, which will increase the concentration of some ingredients in the blood, thus affecting the accuracy of the test results.

Eat lightly, don't worry, ask the doctor more. Yes, I wish you a speedy recovery!