Do I need to fast? Do I have to fasting for routine blood tests?

Routine blood examination does not need fasting, but many other blood tests need fasting examination, many laboratory test results normal values are ** in the normal population of fasting blood draw results, fasting refers to a certain period of time without any calorie intake, hospital routine physical examination, such as fasting blood glucose, blood lipids, liver function, and hepatobiliary, pancreatic and spleen ultrasound, etc., these examinations must be required to be fasting to check, especially when the triglycerides in blood lipids, fasting time is required to reach 12-16 hours, fasting time is not enough, The results of the examination are unreliable. The physical examination in the hospital is generally between 8-10 o'clock in the morning, so after 8 o'clock in the evening before the physical examination, try not to eat anything containing calories, you can drink some water properly, and it is best to rest early so as not to affect the results of the next day's physical examination. If you just want to check the blood for routine tests, you can do it at any time, and you don't need to be fasting.

Yes, when it comes to blood tests, they must be fasted to ensure the quality of the examination.

Fasting is not required.

Routine blood tests are usually done on peripheral blood, such as fingertips and earlobes, and can be performed without fasting.

However, if other blood biochemical tests are needed at the same time, such as liver function, kidney function, blood glucose, blood lipids, etc., fasting tests are required.

It is still up to the doctor to be specific.

No, you don't. Routine blood tests can be done normally.

If you want to test your blood sugar, you should have an empty stomach.

Normal blood routine, you can go anywhere in the afternoon.

Fasting is not required.

Do I have to fasting before a routine blood test?？Through blood routine examination, you can obtain information about many organs in the body, including liver, kidneys, blood sugar, blood lipids, etc., to understand how much risk you have of liver disease and fatty liver disease, and at the same time know the body's immunity and other information.

Generally speaking, a routine blood test requires fasting, but fasting is not as simple as skipping breakfast. The night before the examination, you should avoid eating greasy food, and you should fast after 8 o'clock, if you are still eating supper at 12 o'clock, you will not be guaranteed to have an empty stomach when the blood is drawn. On the morning of the check-up, you should not drink any beverages including juice and milk, except for plain water.

If you want to get the best results, it's best to start a vegetarian diet three days before the test.

Each test uses a different test method and has different normal values. Normal data is obtained by measuring the fasting blood of a large number of mortals. Because the body is relatively in a basal metabolic state when fasting, the influence of food and other factors is excluded, and the nature is relatively stable, which can reflect the real situation of human blood.

Therefore, if we are going to have a blood test, we should also take a fasting blood test. Only in this way can the results of the examination be reliable, can truly reflect the actual situation of the patient, and can provide valuable evidence for the diagnosis of diseases.

After eating, the food is chewed by the mouth, digested and absorbed by the gastrointestinal tract into the bloodstream, and then transported by the blood to various tissues and organs of the body. As a result, certain components of food enter the bloodstream, which can increase the concentration of certain components in the blood. In this way, the results of the test may be incorrect.

If the person who has taken the blood test in the morning has eaten, a large amount of chylomicrons produced after digestion of the food will be quickly absorbed into the bloodstream, and the blood will become cloudy at this time, which is medically called lipohema. Since many blood biochemical tests are determined by the change in the color of the specimen, if the blood appears cloudy due to chyle particles, it is difficult for the testing staff to observe clearly, and ultimately the correctness and reliability of the results will be affected. It can be seen that fasting blood draw can not be affected by factors such as foreign food, and can reflect the real physiological conditions in the human body.

Fasting examination items generally include blood draw (liver function), abdominal ultrasound, carbon-14 (gastric examination), and far-infrared whole-body thermography. It is also best to check blood glucose, blood lipids, and blood pressure on an empty stomach, so that the results are more accurate.

It is recommended that you consult your doctor before the examination and follow the doctor's instructions carefully.

Introduction: I used to think that as long as the physical examination needs to be fasting, otherwise there is no way to do the examination, and most of the examinations need to be fasting, but the longer the examination time, the more uncomfortable it is to be hungry. Today, I would like to tell you that when you have a routine blood test, you don't necessarily have to be fasting, but the results of the test are more accurate when you are fasting.

I don't know if you have ever had such an experience before, that is, if you eat something before going for the examination, you will be asked to come back on the second day or in the afternoon, because after eating, those will directly affect the results of the examination, but you do not need to be particularly fasting when you have a blood routine examination, even if you eat a little something, the result will not have a great impact. Because when doing a routine blood test, it does not need to draw venous blood, but uses fingerstick blood pampling. Although it is relatively simple, it can detect many diseases, such as anemia, spleen weakness, paleness, etc., which can be detected through routine blood tests.

You can eat a little bit during the blood test to keep yourself from being so hungry.

The requirements for fasting are not so strict, but for the kind of blood sugar lipid or liver function tests are strict, you must draw blood on an empty stomach, and you can't eat, so you must ask the relevant doctor or search the Internet yourself to see if you need fasting, if you have to fast, don't start eating after 12 o'clock the night before, only in this way can you achieve the effect of a check, and eat dinner as early as possibleIn this case, go for the check-up early on the second day, and hurry up to eat after the check-up, otherwise you will be too hungry to stand it. If you are really hungry on any day, but you need to have a check-up, it is recommended not to eat, and if you do eat, it is recommended to make a new appointment, otherwise it will be a trip in vain, and it will increase the workload of the doctor.

I feel like I really need to have an empty stomach because it makes the test report very accurate.

It is really necessary to have an empty stomach, because this can make the blood routine test more reasonable and the results more accurate.

Yes, you really need to have an empty stomach when you have a blood routine to get more accurate results.

Summary. Simple epistaxis is not leukemia, leukemia can manifest as epistaxis, which is usually heavy and difficult to stop by compression. However, leukemia is also accompanied by other systemic symptoms, including dizziness, fatigue, decreased activity tolerance, and in severe cases, dyspnea after exertion, and usually fever, including swollen gums, sore throat, cough, sputum and other infectious symptoms.

In addition, leukemia patients will also be accompanied by bleeding symptoms, including bleeding gums, oral blood blisters, **mucosal bleeding spots, etc., and may also be accompanied by liver and spleen, lymphadenopathy, bone pain, etc. So simple nosebleeds are usually not leukemia, and the blood routine should be fasted?

Please be patient, we are sorting it out, and we will answer you immediately, and please do not end the consultation.

Hello, glad to answer for you. No, you don't.

Patients do not need to be fasting when they go to the blood test, because the blood routine items mainly include white blood cells, neutrophils, eosinophils, basophilic clumps, including red cha Xiao cherry cells, platelets, etc., these quantities are not affected by the amount of food eaten or drunk.

If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress. If you feel that I am satisfied with the answer of Fu Lu, you can click on my avatar for one-on-one consultation. Finally, I wish you good health and a good mood!

Can nosebleeds be a symptom of leukemia?

Simple epistaxis is not leukemia, leukemia can manifest as epistaxis, usually the amount of bleeding is greater than that of the old fluid, and it is difficult to stop the bleeding by compression. However, leukemia is also accompanied by other systemic symptoms, including dizziness, fatigue, decreased activity endurance, severe people will have difficulty breathing after activity, and usually accompanied by fever symptoms, including swollen gums, sore throat, cough, sputum and other infectious symptoms. In addition, leukemia patients will also be accompanied by bleeding symptoms, including bleeding gums, oral blood blisters, **mucosal bleeding spots, etc., and may also be accompanied by liver and spleen, lymphadenopathy, bone pain, etc.

So simple nosebleeds are usually not leukemia, but also a sore throat and cough.

Hello, such conditions can also be caused by colds and flu If you want to be diagnosed, you want to go to the hospital for diagnosis.

I'm so scared right now.

Hello, don't be afraid, go to the hospital for testing as soon as possible.

It was like this for days.

Hello, go to the hospital as soon as possible for testing A single symptom cannot be diagnosed.

Is it OK to do a blood routine?

Hello Yes.

Let's do nasal scopy too.

Hello No, you don't.

There are about two kinds of routine blood collection, one is to prick the finger and use peripheral blood, which does not need to be fasted. The other is to draw venous blood, most hospitals only draw venous blood, and the doctor will often recommend fasting when drawing venous blood, and the reason for suggesting fasting is because I am worried that I will eat greasy in the morning, and there will be chyle blood and fat in the blood, which will interfere with the results. In fact, the value of the blood routine itself is not affected by eating or not eating, for example, eating something in the morning, eating is lighter, which does not affect the result, nor does it affect the blood drawing, or for example, eating at 6 o'clock and going to the hospital at 10 o'clock to see a doctor, it has been close to selling for 4 hours, and it has been consumed, so it does not affect it.

If the blood routine itself, in fact, fasting has no effect on fasting, but it is best to fasting when drawing venous blood, so that there is less fat tissue in the blood and less interference.