Blood Types and Facts

The ABO system The most important blood group system is ABO, in which your blood is classified as A, B, O or AB This is determined by two antigens on the red

The universal blood type, O negative, can be transfused to patients of any blood type Because it can be given to anybody, even when a blood type need has not

blood link The Eight Main Blood Types · B 2% of the population Often transfsued in only three days after donation · B 11% of the population B+ platelets are in high

blood type Blood group O Positive is the most common group in Ireland while AB negative is the least common Blood Percentage Group