Do I need blood to get a health certificate?

Of course it is necessary. The main content of health certificate is surgical examination, including height, weight, limbs and so on. Secondly, we should draw blood for biochemical examination and chest imaging examination to eliminate infectious diseases. In addition, ECG, hepatobiliary ultrasound and other examinations should be done. The health certificate is valid for one year, and it needs to be reissued after expiration.