what if he demands a virginity test in return?
This is a delicate matter and a little caution is required to ask for such stuff. I understand that if a person is playboy/party animal or is known to have many affairs in the past, its a good thing to ask for it (but then why a girl should marry such guy to begin with?) ..
if he belongs to a normal religious/semi religious family .. asking him to give his blood report is definitely going to rub him the wrong way.