Agglutination is a process in which particles or cells are bound together due to the presence of specific antibodies. Agglutination can occur in blood transfusion and cause serious complications. To avoid agglutination, it is important to match the blood group of the donor and the recipient before transfusion.

Blood groups are determined by the presence or absence of specific antigens on the surface of red blood cells. There are four main blood types: A, B, AB, and O. Type O blood does not have any A or B antigens and is considered a universal donor because it can be given to any person without causing an immune response.

On the other hand, type AB blood has both A and B antigens and is considered a universal receptor because it can receive any blood type without causing an immune response. In addition to blood group matching, screening other antibodies that can It is also important to cause agglutination, such as antibodies associated with autoimmune diseases or previous injections.