See also: Blood Type Frequencies amongst the Tribes of India.
The frequency of ABO and Rh blood groups in a total of 1 40 320 males and females, donor population was compared. Among Rh-positive male donor's blood, group B (53 400, 39.84%) was found to be most prevalent group followed by group O (39 000, 29.10%), A (29 135, 21.73%), and AB (12 485, 9.33%). Among Rh-positive female donors, again blood group B was most common (100, 35.08%) followed by group O (75, 26.31%), A (65, 22.83%), and AB (45, 15.78%). Rh-negative donors were 6 015 (4.29%) among the total donors. On further analysis, female donors showed a relatively higher incidence of Rh negativity (35, 10.93%) as compared with males (5 980, 4.28%). Among Rh-negative males, blood group B (2 500, 41.80%) was the commonest followed by group O (1 997, 33.39%), A (800, 13.39%), and AB (683, 11.42%), whereas in Rh-negative females, blood group B (20, 57.14%) was followed by O (8, 22.86%) and A (7, 20.00%). None of the female donors showed AB negative. The total of ABO blood group was group B (56 020, 39.92%) followed by group O (41 080, 29.27%), group A (30 007, 21.38%), and group AB (13 213, 9.43%). In religion wise, Hindu blood donors were 1 12 290 (80.02%) and Muslim were 28 030 (19.98%). The Rh-positive donors were 1 34 305 (95.71%) and Rh-negative were 6 015 (4.29%).
Source: Frequency of ABO and rhesus blood groups in blood donors
Testing results vary from in some areas:
The results were analyzed and data compiled. Our study involving 36,964 donors, both male and female, showed O group to be high, viz., 14,716 (39.81%) donors, followed by B group having 11,071 (29.95%) donors and A at 8,817 (23.85%) and AB at 2,358 (6.37%) donors being the lowest. Rh-D blood group frequency was 94.20% positive and 5.79% negative, which shows that it follows the Asiatic trend of O > B > A > AB. There were only 2 (0.005%) donors out of 36,964 with Bombay blood group (Oh).
Distribution of ABO and Rhesus-D blood groups in and around Bangalore