What does it mean to draw blood on an empty stomach?

Taking blood on an empty stomach refers to taking blood tests without eating or drinking, and generally taking blood tests and other medical examinations without breakfast in the morning.

An empty stomach means not to eat on an empty stomach. In several cases, you will encounter the problem of fasting, such as fasting required by the laboratory, "fasting" and "satiety" when taking medicine, and foods that are not suitable for fasting.

Fasting classification

1. Under normal circumstances, the specific requirements of fasting in the laboratory are: the person who wants to have a physical examination should maintain his usual living habits, maintain a normal diet structure, make the food light, do not drink alcohol, coffee or strong tea, and have a good rest the night before blood drawing. After getting up the next morning, don't eat breakfast, drink less or no water, don't do morning exercises, and go to the hospital to wait for blood collection after your mood is stable. This kind of blood specimen is a good specimen to accurately reflect the condition.

As we all know, taking medicine can be divided into "fasting" and "satiety". Many drug instructions indicate "take before meals" or "take after meals". What is "before meals" and what is "after meals"?

"Take before meals" means that this medicine needs to be taken on an empty stomach, 65438+ 0 hour before meals or 2 hours after meals to facilitate absorption. If you just eat a lot of snacks before eating, then "before eating" at this time is not "fasting" or really "before eating". And "taking after meals" means taking medicine half an hour after a full meal, and using food to reduce the stimulation of drugs to the gastrointestinal tract or promote the absorption of drugs by the gastrointestinal tract. Similarly, if you just eat a lot of snacks before meals, you don't have to be dogmatic. You can't take medicine until after dinner, because you are "full" at this time.

Usually, you can't eat tomatoes and bananas on an empty stomach, which means four or five hours before each meal, that is, after the meal. Of course, if you eat a lot of snacks before meals, it is not an empty stomach.