O-), AB positive, negative (AB+, AB-). We cannot choose blood type. It is inherited. We cannot change it even if we want to.

In many movies and cases, it is primarily shown that the O-Negative Blood group is the most rare blood group in the world. However, in reality, AB negative is the rarest blood type, with only ...

O negative blood, also known as the “universal donor” type, is in great demand as it can be used in emergency transfusions for patients of any blood groups.