The main reason is that blood tests of liver function and kidney function are needed to apply for health certificate, and you can't eat any food. Generally, you can't eat after 8 pm the day before the inspection.
After eating breakfast, it may cause the liver alanine aminotransferase or aspartate aminotransferase to increase. This situation usually needs to be re-examined, so it is best to go to the hospital for a health certificate on an empty stomach, usually at least 8~ 10 hour, so that the examination results are more accurate and there is no error.
Precautions:
In addition, the day before the health certificate examination, in order to accurately detect the real situation of the body, it is necessary to avoid alcohol, tobacco, coffee and tea. Alcohol, tobacco, coffee, tea and other refreshing substances will have an impact on the nervous system, circulatory system and digestive system of the human body, leading to dysfunction, and the physical examination does not conform to the normal state of the body.
Don't take part in strenuous sports, such as long-distance running, marathon, playing ball for a long time, hiking all day, etc. Otherwise, it may cause muscle soreness, listlessness, short-term abnormal blood composition, gastrointestinal spasm and so on. On the day of physical examination, the results of physical examination are inaccurate.