In order to ensure the accuracy of blood test results, many blood tests require patients to have an empty stomach. However, excessive fasting will also affect the test results. If the fasting time is more than 18 hours, some tests will have abnormal results, such as serum bilirubin may increase due to the increase of fasting time, and blood sugar may decrease to hypoglycemia due to the long fasting time.
The fasting standard is
The night before blood drawing, try to keep your usual living habits and eat normally; Food should be light, don't drink; Don't drink coffee or strong tea after meals. After getting up the next morning, don't eat breakfast, drink less or no water, don't do morning exercises, and calmly go to the hospital to wait for blood collection.
Avoid drawing blood too late.
During the day, people's metabolism always fluctuates, and the metabolic rate is not at the same level. Therefore, the physical examination requires blood to be drawn on an empty stomach at 7: 30 ~ 8: 30 in the morning, and it cannot exceed 12: 00 at the latest. It's too late, because of the influence of physiological endocrine hormones in the body, the test value will be distorted.
Avoid mood swings
Stress and emotional excitement can affect neuroendocrine function, leading to the increase of serum non-esterified fatty acids, lactic acid and blood sugar. Therefore, before the physical examination, you should control your emotions, keep your emotions stable before the exam, don't walk around, don't eat cold drinks, and don't smoke.
Avoid strenuous exercise
Exercise causes changes in the composition of blood and body fluids, even slightly. Exercise can also cause the physiological blood sugar to rise and the endocrine hormone level to change, thus affecting the performance. So don't do strenuous exercise two days before physical examination, and don't do light activities such as walking before 1 hour.
Avoid a greasy diet
Diet is the most important factor affecting blood lipids. Blood lipids should be checked after fasting 12 hours. Generally, after dinner, don't eat other food except water. In addition, in order to ensure the objective and accurate results of the physical examination, the subjects must eat less or not eat high-fat food and drink alcohol within 3 days before the physical examination.
Avoid the physiological period
Women's menstrual period, pregnancy and other physiological conditions will affect the blood test results, so women should not do gynecological examination, blood routine examination and liver function examination before and after menstruation. Breast infrared examination is also best chosen one week after menstruation is clean.
Never stop taking drugs blindly.
Blood collection should be on an empty stomach, but patients with chronic diseases should be treated differently. For example, some patients with hypertension have to take antihypertensive drugs every morning. Stopping drugs or delaying taking drugs rashly will lead to a sharp rise in blood pressure, which is dangerous. Therefore, patients with hypertension should take antihypertensive drugs as usual before receiving physical examination. If you are taking antibiotics, vitamin C and diet pills, you should wait for 3 days after stopping taking them.
Benefits of physical examination
One of the benefits of regular physical examination is to cultivate good health awareness.
Through regular physical examination, you can learn about your body's operation and see if your body still maintains strong motivation under long-term operation. In the busy work, stopping for a routine physical examination can regain the meaning of life, temporarily leave the crowded office, read your physical examination report in the quiet physical examination hall and think about it. Can everything you have worked so hard to earn be at the expense of health?
The second benefit of regular physical examination: early detection of diseases
The World Health Organization (WHO) points out that one third of all cancers are completely preventable; Another third can be cured by early detection, early detection and early treatment; The last third, through timely detection of diseases and active treatment, can also prolong the life of patients.
Early cancer often has no symptoms, which can't be detected by eyes and hands. If we can attach importance to regular physical examination in our life, we can urge ourselves to develop good living habits, promote health care and prevent cancer. Even if you accidentally get cancer, you can find out the disease through regular physical examination and fundamentally ensure your health.
The third benefit of regular physical examination: customized personalized health management plan
Others can eat ginseng, but you can't. Why? Experts will answer for you. According to your physical examination report, a team of experts at or above the deputy senior level will tailor a personalized health management plan for you. For the risks that may bring to your health, experts will remind members to pay attention to prevention and put forward scientific prevention plans, covering everything from work and rest to diet. Perfect health management scheme provides scientific guidance for your health care and three-dimensional services for your health.