For the handling of health certificate, the influence of fasting is usually not too serious, because the examination items of health certificate are relatively basic, including internal surgery, ophthalmology, otolaryngology examination, and the cultivation of height, weight, blood pressure, liver function, chest X-ray, Shigella in stool and Salmonella. These results are not influenced by diet.
Therefore, if you don't apply for a health certificate on an empty stomach, you can check the rest items first, and then do the physical examination items that need an empty stomach. If you have done a physical examination that requires an empty stomach, but you can't do it, you can wait for a while and then have an empty stomach examination to ensure the accuracy of the examination results.