Distribution of abo and rh blood groups in a tertiary care hospital blood bank

ABO and Rh groups are the most important blood groups in human beings. Study of the distribution of blood groups plays a vital role in organ transplantation, genetics research, human evolution, forensic pathology and in blood transfusion practice. Aim of the study was to study the distribution of ABO and Rh blood groups. A retrospective study was carried out at tertiary care hospital blood bank from January 2014 to December 2014. A total of 3099 samples were tested for ABO and Rh groups. O positive was seen in 810 cases (26.13%), A positive in 655 (21.13%), B positive in 534 (17.23%), AB positive in 418 (13.5 %), O negative in 287(9.2%), A negative in 201(6.48%), B negative in 131(5.2%), and AB negative in 63 (2.03%) cases. Male patients were more in the study accounting to 68%. Knowledge about the incidence of blood groups in blood banks plays significant role in blood transfusion and inventory management.