You can't eat breakfast before going for a physical examination.
The reason why the physical examination needs to be fasting:
1, the physical examination program that needs to be fasting is usually blood draw and abdominal ultrasound, etc. The main reason is that after eating, the different components in the food will have different effects on the examination results and then interfere with the results. The main reason is that after a person eats, the different components of the food will have different degrees of impact on the results of the inspection test, and then interfere with the results of the physical examination.
2, if it is to do abdominal ultrasound, if there is food in the stomach and intestines, but also to a certain extent to affect the development of the image and make it more difficult to distinguish between normal and abnormal. Therefore, in order to achieve the ideal test results, when prompted to need to fasting, do not eat and drink.
3, if the fecal occult blood test examination, three days before the fasting meat, liver, blood, food containing a lot of chlorophyll and drugs containing iron. Don't eat after 8 p.m. the night before the physical examination, and don't drink water after 12 p.m. You should also avoid strenuous exercise and get enough sleep three days before the physical examination.
Extended information:
Taboo before the physical examination:
1, avoid strenuous exercise.
Exercise will cause changes in the composition of blood and body fluids, and even mild activity can cause physiological blood glucose elevation and changes in endocrine hormone level content, thus affecting the results. Therefore, do not do strenuous exercise two days before the physical examination, and light activities such as walking should not be done 1 hour before.
2, avoid greasy diet.
Diet is the most important factor affecting blood lipids, checking blood lipids requires fasting for 12 hours after the general dinner, in addition to drinking water, do not eat other foods. In addition, in order to ensure the objectivity and accuracy of the results of the physical examination, the examinee must eat less or no high-fat food and do not drink alcohol in the three days before the examination.
3, avoid physiological period.
Women's physiological conditions such as menstruation and pregnancy can affect the results of blood tests, so it is not advisable to carry out gynecological examinations, blood tests and liver function tests before and after menstruation. Breast infrared examination is also best chosen one week after the menstrual period is clean.
Reference:
Why do I need to fast before a physical exam? -People's Daily News