ArticleMedecine tropicale et sante internationale2026
[A proposed decision-making algorithm for discrepancies between red blood cell (Beth-Vincent) and serum (Simonin) tests in ABO blood typing at the Immunology Laboratory of Bouaké University Hospital (Côte d'Ivoire)].
Article in Medecine tropicale et sante internationale, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: ABO blood typing relies on two complementary tests: the red blood cell test (Beth-Vincent) and the serum test (Simonin-Michon). Concordance between these tests is essential for transfusion safety. Persistent discrepancies, though rare, are critical and require thorough investigation. Methods and case presentation: Thirteen patients (aged 6-73) were examined for persistent ABO discordance. We performed parallel Beth-Vincent and Simonin tests. In the event of discordance, we triple washed the red blood cells in saline solution. Auto-, allo-, and ABO controls were systematically performed. The clinical contexts included trauma, anemia, and preoperative and prenatal assessments. Most patients had no history of previous transfusion. Most cases presented a positive auto control, suggesting the presence of autoantibodies, and/or a positive AB control, indicating polyagglutinability. Discrepancies mainly concerned conflicts between direct and inverse ABO phenotypes (AB/O, A/O, and B/O). These results demonstrate the value of controls in guiding diagnosis and the need for complementary approaches. Conclusion: This series illustrates the decision-making algorithm proposed for cases with persistent discrepancies between red blood cell and serum tests during ABO blood typing.
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