ABO Group Test

Blood type is determined by the presence or absence of specific antigens (proteins) on the surface of red blood cells (RBCs). The most widely used classification is the ABO system, which divides blood into four main types:

• Type A: RBCs have A antigens and plasma contains anti-B antibodies, which react against type B antigens.
• Type B: RBCs have B antigens and plasma contains anti-A antibodies, which react against type A antigens.
• Type AB: RBCs have both A and B antigens and no anti-A or anti-B antibodies in the plasma, making it the universal recipient for ABO blood types.
• Type O: RBCs have no A or B antigens but have both anti-A and anti-B antibodies in the plasma. Type O negative is the universal donor for all ABO blood types.

Blood Transfusions

Matching donor and recipient blood types is essential to prevent immune reactions. Receiving incompatible blood can trigger the immune system to attack transfused cells, potentially leading to severe complications such as hemolytic reactions, shock, or organ failure.

Organ Transplants

ABO compatibility is also critical in organ transplantation. Recipients typically need organs from donors with a matching blood type to minimize the risk of immune rejection and improve transplant success rates.