Background: Clinical application of blood grouping are many. Blood grouping are needed for blood transfusion, in preventing hemolytic disease, paternity dispute, medico legal cases, in knowing susceptibility to disease, and also necessary for genetic research. This study was carried out with an objective to provide data regarding distribution of ABO and Rh blood groups among people visiting various department of tertiary hospital of Dibrugarh district of Assam, India. Methods: Data of 200 subjects were collected and analyzed regarding ABO and Rh blood groups from 01 August 2021 to 31 July 2022 and reported in simple numbers and percentage. ABO and Rh blood group type is determined by glass slide method. Results: The most common blood group among the subject was O (33%), B (33%), A (23%) and AB (22%). Rh positivity among the subject was 93% and Rh negativity is 7%. Conclusions: The most common blood group among the subject was O positive and B positive and least common was AB negative.

Introduction- Haemoglobinopathies are one of the commonest hereditary disorders in south-east asia and pose a major health problem.The data of their prevalence in the society may help in the future prevention of heath hazards.Materials and method:-Agarose gel electrophoresis was used to study the haemoglobin typing in 118 individuals.The Hb percentage was studied by cyanmethhaemoglobin method.Result:-It was observed that prevalence of abnormal Hb was common in females as compared to males.And moreover in each type of Hb,the percentage of Hb was more in males as compared to females.Conclusion:-Prevalance of abnormal Hb is common in dibrugarh,Their early detection can help in preventing serious health hazards.