Do I need an empty stomach to apply for a health certificate? ?

Hello, if you need to have a health certificate test, you should be on an empty stomach for breakfast, because the tests of liver function, renal function, blood lipid and blood sugar need to be on an empty stomach for 6-8 hours. It is best not to eat greasy things like fish and meat or drink too much wine the night before the physical examination, otherwise it will affect the test results.