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

No need. According to the health network, you can apply for a health certificate in the afternoon without fasting. The physical examination items of health certificate mainly include oral cavity, facial features, physical indicators, liver function, stool, chest X-ray and so on. It has little effect on eating or not. The health certificate can be applied at the local centers for disease control and prevention or health centers with preventive health checks.