Blood Types

Blood Types

What are they? How are they decided? What do they mean?

How are Blood Types Determined?

The ABO blood type system classifies blood into 4 types: A, B, AB, and O.

If both A and B agglutinogens are present, the blood is

AB Type Blood

The presence of A type agglutinogens determines

A Type Blood

The presence of B type agglitinogens represents

B Type Blood

The absence of either A or B type agglutinogens determines an

O Blood Type

The presence of absence of an RH (Rhesus D) protein determines whether the blood is positive or negative

Blood Types in the US