Abstract

 Background and Objectives

 Distribution of ABO blood groups and Rh in different parts of the world and across races is different. To ensure adequate and safe blood, it is imperative to have information about the frequency of blood groups in each region. The aim of this study was to evaluate the frequency of blood groups in the population of donors in Golestan province performed during 2006-2010.

 Materials and Methods

 In this descriptive study, the study population included blood donors who referred to the Golestan Blood Transfusion Center during 2006-2010. In this study, the blood groups of each donor were determined by two methods, cell type and back type for ABO blood groups and cell method for determining Rh groups by using anti-serum A, B and D and cell suspension A and B. Data were analyzed by using Minitab statistical software.

 Results

 The results showed that the frequencies of donors with blood groups O, A, B and AB in the population were 36.72%, 30.02%, 25.28%, and 8.02%, respectively. Frequency rates of Rh positive was 89.86% and Rh negative 10.14%.

 Conclusions

 The most frequent blood groups in order were A, B, AB and O during 2006-2010 and there were no significant changes in distribution of ABO and Rh blood groups.