Bhanu P. Singh, Archana Singh, Watsala Singh, Anil K. Saxena, Shipra Singh
BACKGROUND: Approximate 30 blood group systems have discovered and more than 400 erythrocytes antigens are identified. Blood group ABO and Rh are most important among all other blood group systems in transfusion service practices. The frequency of four major blood groups namely A, B, O, AB with Rh Positive and Negative varies in different population of the world and differ also in region and race wise. MATERIAL AND METHOD: This 5 years retrospective study was conducted at Blood Bank of a Medical college Hospital of Bilaspur in Northern Chhattisgarh, catering the 1/3 population of state. Data were collected from the Blood Bank Grouping record from the period of January 2010 to December 2014. Blood group of blood donors and patients were determined by Monoclonal Anti Sera by slide agglutinations tests. Rare case and difficult case were examined by test tube agglutination method and Matrix Gel System of Tulip. RESULT AND CONCLUSION: 31973 subjects were examined for blood group during observation period, Out of these 31092(97.25%) were male and 881 (2.75%) were female. The frequency of blood group B in these populations was 11007 (34.42%) (33.36% Rh Positive and 1.06% Rh Negative) Followed by O were 10864 (33.97%) (33.33% Rh Positive and 0.64% Rh Negative), A was 9113 (28.50 %) (27.99 % Rh Positive and 0.51% Rh Negative) and AB was 989 (3.11%) (3.01% Rh Positive and 0.1% Rh Negative). Rhesus group Rh Positive were 31242 (97.7 %) and Rh Negative were 731 (2.3 %).
