Can I pass the health certificate after breakfast?

Strictly speaking, if you eat breakfast, getting a health certificate has a lot of influence. Especially liver and kidney function. Because we normally test liver and kidney function, we must keep an empty stomach, including doing B-ultrasound and so on. If you eat breakfast, you can't guarantee that your figures are accurate, especially your triglycerides and cholesterol. Including your blood sugar, there will be corresponding inaccuracies. Most likely, it depends on how often you have a check-up after breakfast. If it is within half an hour, it may not affect much. If it takes more than two hours, or, er, an hour or two, the impact will be considerable, and some abnormal data will probably appear. In the end, you said no, so you had to pay for a second inspection. In fact, the health certificate is not so strict, as long as you say you don't eat too much, it should be no problem.