Background: The aim of present study is to compare the distribution of ABO blood groups in population of migrant labourers from North and South India in Punjab. Materials and method: The total of 3500 migrant labourers from the North India and South India were randomly included in the study. Venous blood samples were collected from the subjects in the sterile vials containing an anticoagulant (EDTA) and blood groups were determined. Results: The blood group B is significantly more (p <0.05) in North Indian subjects while the group O is significantly more (p <0.01) in South Indian subjects. The other blood groups i.e. Group A, AB did not show any statistically significant result (p >0.05). Distribution of ABO blood Groups in Males and Female of North and South Indians. The blood group O is significant (p <0.01) in the female belonging to South India. Conclusion: North Indians had a greater frequency of blood group B whereas the South Indian had a greater frequency of blood group O.
Key words: ABO blood group, agglutinogens.