Evaluation of alloimmunization rate and necessity of blood type and screening test among patients candidate for elective surgery
Mohammad Taher Hojjati
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Introduction: Alloimmunization is a reaction of the immune system to foreign antigens. For prevention of alloantibody formation, performing of type and screen test is necessary on a patient's blood specimen as part of pre-transfusion testing. Materials and method: In this cross-sectional study, type and screen test done for 1420 patients with elective surgery for detection of alloantibody in Imam Khomeini hospital in Ardabil. Results: Prevalence of alloantibody in this population was 0.92% (13 patients) and 99.2% (1407 patients) showed no alloantibody in their serum. The most prevalent alloantibody was anti-K, anti-E and anti-c. No significant relationship observed between sex and alloimmunization rate. Conclusion: performance of type and screen test play an important role in reducing the rate of alloimmunization, and also, could reduce the demands for blood reservation in hospital blood banks.