Getting a Driver's License in Zihua - current info

Actually knowing your blood type is next to useless medically. Should you need blood, the procedure is called “type and cross match.” The first thing that is done is a blood type, which takes a couple of minutes, then further tests are done to determine if the blood will react with the donor blood. There would never be a case where the blood type was not done. If the situation was that time critical, O negative blood would be given.