There has been a policy in this regard for a long time, and it is not allowed to check two and a half items of hepatitis B in the recruitment physical examination. However, the welfare medical examination is relatively loose. You can check hepatitis B in two halves, but you must abide by the principle of voluntariness. The company or hospital can't force it, and the medical report needs to be stamped and handed over to the medical examiner. It is illegal for the medical examination unit or other personnel to check the medical examination report privately. I am from the professional physical examination center here in Shenzhen. There is no hepatitis B item in our entry physical examination, but there is hepatitis B in the welfare physical examination. But we will have an agreement, and I will voluntarily sign to help you test this project. If you don't sign, you can't test.
You should specifically ask the person in charge of your unit, do you have any special requirements for this piece? If so, it may be illegal operation with the hospital.