Can I have breakfast for a blood test in the morning What happens if I eat it

Normally, you can't eat breakfast. Because after eating breakfast, it affects the amount of certain values in the blood. The most obvious example is blood sugar measurement.

There is a big difference in blood sugar levels between you eat and don't eat in the morning. Another example is the measurement of liver function. Eating and not eating can have a direct impact on the results.

So if you test these things and eat, then you don't need to test. But those simple blood tests, such as routine blood tests, have nothing to do with eating or not eating.

Whether you can eat breakfast with blood drawing, that is to say, whether you need to be in this fasting state, it depends on the requirements of the blood drawing project, that is to say, the blood drawing project is not affected by eating, for example, you need to check liver and kidney function, electrolytes, blood lipids, these indicators must be in an fasting state, and it is required to be fasting for at least eight hours, because these indicators will change after eating, and cannot reflect the real state of the body. For example, for thyroid function tests, there is no need to draw blood on an empty stomach, but it is possible to draw blood after eating, because the measurement of thyroid function is not affected by meals.

For example, sex hormone testing is usually required on an empty stomach and is also required to be checked on the 2nd to 3rd day of menstruation. Therefore, different examination items have different requirements for blood drawing.

Blood tests are different according to the content of the examination, some require fasting blood collection, while general routine examinations do not require fasting, for example, blood routine tests do not require fasting, but if you say that you are not sure what to do. At this time, it is best to have an empty stomach, for example, sometimes the color ultrasound examination is also fasting.

Therefore, it is best to go to the hospital for a check-up or a physical examination on an empty stomach and not eat breakfast, so as to get an accurate result. After eating breakfast and drawing blood after eating, it will affect some indicators, such as the aminotransferases we often say, which may be elevated after eating. If you drink water, it may cause some indicators to be low, which will cause the concentration of blood to drop, so it is best not to eat breakfast when drawing blood.

Breakfast is generally not allowed for a morning blood test, as the results of some items can be affected by breakfast. If breakfast is eaten, then the results of the blood test are inaccurate.

Blood tests can not be eaten for breakfast, especially blood sugar tests, if the blood test is done after breakfast, the blood sugar data is not accurate.

Can I have breakfast with a blood test in the morning? What happens if you eat it? Morning blood tests are not allowed for breakfast. Eating breakfast will affect the inaccuracy of the blood test.

If you check blood sugar, liver function, or whatever, you can't eat it, it will affect the accuracy of the test results.

A blood test in the morning must not be eaten for breakfast, and the blood test after breakfast is not accurate.

Routine blood tests before the examination:

First, don't eat too greasy, high-protein foods the day before the blood draw, and avoid drinking a lot of alcohol. The amount of alcohol in the blood can directly affect the test results;

Second, you should fast for 12 hours after 8 p.m. the day before the test so as not to affect the test result.

Third, when drawing blood, you should relax your mind and avoid the constriction of blood vessels caused by fear, which will increase the difficulty of blood collection.

After the examination: first, after the blood is drawn, local pressure needs to be performed at the needle mouth for three to five minutes to stop the bleeding, and be careful not to rub it, so as not to cause subcutaneous hematoma;

Second, the compression time should be sufficient, the clotting time of individuals varies, and some people need a little longer to clot, so when the surface of the ** seems to be bleeding, stop compression immediately. It may cause blood to seep under the skin and cause bruising due to complete bleeding, so the compression time should be longer.

Normal blood tests, liver function or blood routine tests are all tested on an empty stomach, and the normal index is subject to fasting, so you can't eat.

Blood tests, blood routines are fine. Other blood tests should be done by the doctor. Otherwise, the results of the blood test will not be allowed.

Depending on what your blood test checks, it's best not to eat at first.

Do not eat breakfast before the blood draw.

In order to check your health, it is okay to skip meals once in a while.

Specific reasons: 1. It is generally required to draw blood in the morning, try to minimize the amount of exercise, do not eat food, and keep an empty stomach before blood drawing.

2. You can drink a small amount of water, except for some experimental results that must be taken on time.

3. Venous blood is generally collected for blood examination, and venous blood test is carried out except for special requirements.

Blood sugar should be checked on an empty stomach, eating breakfast can affect the glycemic index.

Fasting blood glucose generally refers to blood glucose monitoring without eating any food from the time before going to bed at night to the early morning of the next day, and generally the day before lunch or dinner is not considered fasting blood glucose. Since blood sugar is susceptible to most influences, fasting blood glucose testing can be a good way to rule out these effects and reflect the patient's true blood sugar level.

Generally, before the fasting blood glucose test, the doctor will tell the patient not to eat before the blood sugar test, so many patients will think that they can drink water just because they can't eat, and even drink some drinks because they are hungry. For patients, drinking a little plain water before fasting will not affect the blood sugar test results, but only plain water, and drinks must be prohibited.

Under normal circumstances, you cannot eat breakfast before fasting blood sugar is measured, and after eating, the human body will ingest the calories in the food, which will affect the level of blood sugar in the body, resulting in errors in the measured blood sugar results. Let's take a closer look!

What blood sugar was measured when I went to the hospital.

Blood glucose is divided into fasting blood glucose, preprandial blood glucose, 2-hour postprandial blood glucose, and random blood glucose. Generally, when you go to the hospital to measure your fasting blood sugar, fasting blood sugar refers to the blood sugar after fasting for 8 to 12 hours, and its normal range is that when fasting blood sugar is considered diabetes. Note that fasting blood sugar mainly refers to the blood sugar in the morning when you are fasting, and the blood sugar measured before lunch and dinner is called preprandial blood glucose.

Can I eat breakfast with blood sugar checks.

After eating, the human body will ingest the calories in the food, which will affect the blood sugar level in the body, resulting in an error in the blood sugar results.

Can I drink water for blood sugar testing.

Do not eat breakfast or drink drinks and other calorie-induced foods before blood sugar measurement, but if you are really thirsty, you can drink a few sips of plain water, but not too much, otherwise the blood may be diluted, increase the excretion of urine sugar, and affect the determination of blood sugar results.

Precautions before measuring blood sugar.

1.Keep your diet light the night before and don't eat after 8 p.m.

2.Emotional instability and agitation, lack of sleep, physical exertion, fever, strenuous exercise, etc. may affect the measurement of blood glucose, try to avoid the above situations.

Some blood tests can be checked at any time, such as red blood cells, white blood cells, platelets, etc. Some blood tests require blood tests to be taken on an empty stomach (skipping breakfast) in the early morning, such as kidney function, liver function, erythrocyte sedimentation rate, blood glucose, etc. This is because:

1. Avoid the influence of factors such as diet on some components in the blood. Because food is absorbed by the gastrointestinal tract into the bloodstream and then transported from the bloodstream to the whole body, the concentration of certain components in the blood will increase, affecting the accuracy of the test results.

2. After eating, all kinds of digested food chylomicrons are quickly absorbed into the blood, making the blood appear turbid, commonly known as "fat blood", so that the examiner can not observe clearly.

3. The mood is relatively stable in the early morning, the body is in a basal metabolic state, and the results obtained can reflect the actual situation more realistically.

The so-called fasting refers to not eating after dinner and not eating early the next morning, in which case the blood test is the best.

Causes abnormalities in blood test results.

For example, eating high-fat foods can significantly increase triglycerides several times; Eating foods high in sugar can cause a rapid rise in blood sugar within two hours. These affect the composition of the blood, resulting in "false positives".

After eating in the evening of the first day to the early morning of the next day, the fasting time is more than 10 hours, and various substances in the body have reached relative stability and balance, and the food factors have basically no effect on the blood composition, and the blood draw can get relatively stable and accurate results at this time.

Therefore, try to minimize the amount of exercise before the blood draw, skip food, keep an empty stomach, and drink a small amount of water, unless you have to take some medication on time. Otherwise, it will interfere with some experimental results.

Analysis:

Hello, whether the blood test after eating and drinking in the morning has an impact on the blood test depends on what items you are examining, you ask questions in liver disease, then about the examination of liver disease, hepatitis B two and a half, virus DNA, and other tests are not affected, liver function may be affected, eating and drinking may make the test of transaminase indicators high, blood lipids, blood sugar may also be high.

Guidance: It is recommended that you ask the doctor whether you need to have an empty stomach when you have an examination, and if you are not sure, try to go for the examination on an empty stomach.