Mafoozur Rahman, Lodhi Y.
Frequency of ABO & Rhesus blood groups in blood donors in Punjab.
Pak J Med Sci Jan ;20(4):315-8.

Objective: To document the frequency of ABO & Rhesus blood groups in the blood donors in Punjab. Design: ABO & Rh grouping was done on all prospective voluntary / replacement blood donors donating blood at major teaching hospital blood banks throughout Punjab over a period of four months from June 2003 to September 2003. The frequency of ABO & Rhesus blood groups in both sexes has been analysed. Settings: Data from all teaching hospital blood banks located at Bahawalpur, Multan, Faisalabad, Lahore and Rawalpindi have been analysed. Subjects: All voluntary or replacement first time blood donors aged 18-60 years of both sexes have been included in this study. Main outcome measures: Documentation of frequency of ABO & Rhesus blood groups in blood donors in both sexes in Punjab. Results: Out of a total of 78768 blood donors, 73322(93.1%) were males and 5446 (6.9%) were females. 94.1% amongst males, while 91.9% amongst females were found to be Rhesus positive. The frequency of Rhesus negative groups in males and females is 5.9% and 8.1% respectively. The frequency of A, B, 0 & AB groups in rhesus positive male donors is 22.6%, 32.4%, 30.5% and 8.6%, while amongst female donors it is 21.5%, 31.6%, 31.0% and 7.8% respectively. Amongst rhesus negative male donors the frequency of A,B, O & AB is 1.46%, 1.85%, 2.22% & 0.39%, while amongst female donors it is 1.76%, 2.74%, 3.13%, & 0.51% respectively. Conclusions: The donor population is predominantly rhesus positive. The blood groups in the order of frequency in rhesus positive donors are B,O,A,& AB; while in rhesus negative donors it is O,A,B,& AB respectively.

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