Question

How do I know my blood type?

Answer 1

Blood type:

1. Blood types are determined by the presence or absence of certain antigens.
2. It is done by drawing blood from a person's body and testing it.
3. Blood grouping is of different types, but the majority follows the ABO system and the Rh system.
4. ABO blood grouping is based on the antigen-antibody reaction.
5. ABO system:

1. This is based on the presence or absence of antigens on the red blood cell surface and plasma antibodies.
2. Group A – It contains antigen A and antibody B.
3. Group B – It contains antigen B and antibody A.
4. Group AB – It contains both A and B antigens and no antibodies (neither A nor B).
5. Group O – It lacks both A and B antigens as well as both A and B antibodies.

6. Rh system:

1. About two-thirds of the population contains the third antigen on the surface of their red blood cells known as Rh factor or Rh antigen; this decides whether the blood group is positive or negative.

1. Rh+ve - If the Rh factor is present, an individual is rhesus positive (Rh+ve).
2. Rh-ve - if an Rh factor is absent individual is rhesus negative (Rh-ve) as they produce Rh antibodies.