Frequency of blood group a subtypes among sudanese donors attending the military hospital blood bank

Background: Blood groups play an important role in transfusion medicine. A blood group has many subtypes, but A1 and A2 are the main subtypes. The percentage of these subtypes was fluctuating in an approximate average of 80% for A1 and 20% for A2. This study conducted to measure the frequency of the subgroups A1 and A2 among Sudanese donors attending the Military hospital blood bank. Materials and methods: A total of 100 venous blood samples collected randomly from blood group A donors attending military hospital blood bank between September –October 2013. Red cells were tested against monoclonal IgM anti-A and Anti-B, while the sera was tested against A1, B and O cells. Results and conclusion: Among the analyzed one hundred blood samples, 74%were A1 and 26% were A2. Our results was likely similar to the results obtained by other researchers worldwide.