The examination directions are divided into three categories: 1. Vital signs: height, weight, blood pressure, breathing times, heartbeat and other physical appearance and general examination. 2. Functionality of organs: such as blood test, urine test, electrocardiogram, hearing, vision, lung function and other organ function verification tests. 3. Organ structure: such as chest and abdomen X-ray, upper gastrointestinal photography, ultrasound and other examinations of organ structure. From these three directions, we can identify whether there are potential diseases in the health status of the subjects, so as to find and treat them early and reduce the probability of disease aggravation. 1 1 test items 1. Electrocardiogram examination: You should rest quietly for about 5 minutes before the examination, and it is not advisable to have the examination after running, full meal, cold drink or smoking. These factors will lead to abnormal ECG, which will affect the diagnosis of diseases. Fasting should also be carried out on the day before the full meal test and the two-step exercise test. Second, EEG examination: wash your hair 1 day before examination, and do not use hair oil. Sedatives, stimulants and other drugs acting on the nervous system should be stopped 24 hours before the examination, so as to avoid hallucinations during the examination and affect the judgment of the examination results. EEG examination must be carried out within 3 hours after meals. If you can't eat before the examination, you should follow the doctor's arrangement and take 50 grams of powdered sugar orally or 40 ml of 50% glucose intravenously to prevent hypoglycemia from affecting the examination results. Third, thyroid iodine examination: the examination must be on an empty stomach. You should not take iodine-containing preparations or eat iodine-rich foods, such as kelp, jellyfish and laver, before the examination. Fourth, renogram examination: urine must be emptied before examination, do not drink tea and coffee, and do not take diuretics. Fiberoptic bronchoscopy: 4 hours before fiberoptic bronchoscopy, fasting and water are forbidden to avoid vomiting caused by examination stimulation. Those who wear removable dentures must take them off before the examination to prevent them from falling off during the examination and mistakenly entering the trachea or esophagus. Fasting should be done 6 ~ 8 hours before gastroscopy to prevent vomiting during intubation from affecting the results of the examination, and emptying and defecation should be done before gastroscopy. Eat a small amount of residual diet 3 days before colonoscopy, take laxatives 1 day before colonoscopy, enema 3 hours before colonoscopy, and discharge feces in jejunum cavity. Six, ct examination: before doing abdominal CT examination, be sure to fast water, so as not to form artifacts and affect the quality of CT images. The CT examination of other parts does not need fasting water. Seven, selective angiocardiography: fasting 3 ~ 4 hours before examination. Seriously practice the actions that doctors need to do during the examination, such as inhaling and holding their breath, to cooperate with the examination. Eight, cholangiography: when doing oral radiography, before the examination 1 day, eat a fat meal at noon to empty the bile in the gallbladder, and it is better to have oil-free and high-sugar food for dinner. Take contrast media according to the doctor's advice around 7 o'clock after dinner, and then fast. When doing venography, it is also before the examination 1 day. Eat fat meal at noon and fast on the morning of the examination. If there is acute inflammation, fever, abdominal pain, acute jaundice, etc. Don't do this check until you are well. Nine, urography and male reproductive system: 1 The day before the examination, eat soft food for dinner, and then fast. 1 Take laxatives the day before the examination to remove the gas and feces in the intestinal cavity. Empty urine before examination. X. Radiography of female reproductive system: Before examination, urine and stool should be emptied, and those with unsolved stool should be enema, and pubic hair should be shaved and vagina cleaned. XI。 Laboratory examination: When blood is drawn for biochemical index examination, blood should be drawn on an empty stomach before breakfast, so that the result is more accurate. In particular, the examination of liver function, blood sugar, blood lipids and other items, the requirements for fasting are more stringent.