Yes there exists simple tests to figure out your bloodtype. Where I live, they specify blood type on your passport, driving license etc. So to obtain one you n

Yes there exists simple tests to figure out your bloodtype. Where I live, they specify blood type on your passport, driving license etc. So to obtain one you need to provide proof of your bloodtype. Had to go to a lab to get that proof. The test itself is pretty cheap and takes 5 minutes at most. They prick your hand, take a drop of blood, and do something with that (mix it with some other chemical or something).