Physical examination record

Hello, I'm applying for Q1 type visa and it needs the physical examination record, when and where should I do the physical exam? should I do it in my home country and then take it to the embassy? or my wife should do it in china and send it to me? I am confused for this part, appreciate your kind support,
also if I get the physical exam here in my home country in a public hospital with their stamp and signature, should i also notarize by ministry of health? or the form from chinese embassy is ok if only have the stamp of the hospital?