Blood Groups for General Knowledge

Blood Groups : It is the grouping of people whose blood may be mixed without clumping of blood vessels. A, B, AB and O are the main four groups. The group AB can receive any blood and is called universal receiver. The group O can be given to any group (universal donor), group A can receive only A (besides O), B can receive only B (besides 0) and O can receive O. These groups were identified by Karl Ladsteiner.

Donors of Blood

1. Group AB may give blood to AB.
2. Group A may give blood to A and AB.
3. Group B may give blood to B and AB.
4. Group O is universal donor for all groups.

Recipients of Blood

1. Group A B is universal recipient.
2. Group A may receive blood from group A and 0
3. Group B may receive blood from group B and O.
4. Group O may receive blood from group O.

Majority of the people around the world have type O positive blood.

 Percentage of People

A +       34%

A -        6%

B +       8%

B -        1%

AB +     3%

AB -     1%

O +      40%

O -       7%