Incidence of A1&A2 Sub Grouping among Blood Group A&AB in Blood Donors Attended at Blood Bank MGH, Jodhpur

ABO groups and subgroups are medically important since these are responsible for transfusion reactions. Variation in A and AB subgroups are observed widely. The study was done in 1000 Blood group who had either A or AB blood group. In our study 711blood donors had A blood group and 289 had AB blood group.84.9 % had A1 subgroup and 15.1 % had A2 subgroup. Among AB blood group 81.6 % had A1 B and 18.4 % had A2B subgroup.