Impact Factor: ISRA (India) = 1.344 ISI (Dubai, UAE) = 0.829 GIF (Australia) = 0.564 JIF = 1.500 SIS (USA) = 0.912 РИНЦ (Russia) = 0.156 ESJI (KZ) = 4.102 SJIF (Morocco) = 5.667 ICV (Poland) = 6.630 PIF (India) = 1.940 IBI (India) = 4.260 Philadelphia, USA 607 QR -Issue QR -Article Abstract: Aims and Objectives: To determi prevalence of ABO and rhesus blood groups among people. Design and duration: This is a cross sectional study done in a duration of 6 months from January 2018 to June 2018.

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... ting: Study was conducted on students of Punjab university. Materials and Methods: This study was conducted on students. Blood grouping was done in the university lab. Male and female both students were included with no age limitation. Consent was taken from all students and also from the ethical committee of the university. A performa was designed in which all relevant data was documented. P-value less than 0.05 was significant and above this non significant. Data was analyzed using Microsoft office version 2014. Statistical data was expressed in the form of tables and charts. Frequency and percentages were calculated. Results: Total 350 cases were included in this study consisted on 150 female students and 200 male students. O-positive was found most prevalent blood group. In male students 150(75%) were rhesus positive and 50(25%) were rhesus negative. In female cases 105(70%) were rhesus positive and 45(30%) were rhesus negative. There were 103(29%) cases with O-negative blood group, 63(18%) cases with A-, 60(17%) with B+, 35(10%) with AB+, 46(13%) O-, 22(6.3%) A-, 15(4.3) cases with B-, 6(1.7%) had AB-blood group. So it was seen that AB blood group has least prevalence and O group has highest prevalence. Conclusion: O blood group has highest prevalence as compared to other blood groups so it is easily available. AB blood group is rare. Rhesus positive group has more frequency than rhesus negative group