AU - Mohammadi, Saylan AU - Moghaddam, Mostafa AU - Babahajian, Serveh AU - Karimian, Mohammad Saied AU - Ferdowsi, Shirin TI - Discrepancy in ABO Blood Grouping in a Blood Donor: A Case Report PT - JOURNAL ARTICLE TA - IJBC JN - IJBC VO - 10 VI - 2 IP - 2 4099 - http://ijbc.ir/article-1-795-en.html 4100 - http://ijbc.ir/article-1-795-en.pdf SO - IJBC 2 ABĀ  - Detection of ABO blood groups through agglutination is the basis of pre-transfusion testing. However, weak agglutination reactions may be obtained with reagent antibodies and are a result of weak expression of A and B antigens on red blood cell surface which may cause a discrepancy in blood group typing. Here, we report a donor which showed discrepancy between red blood cells (forward) and serum (reverse) typing. A detailed analysis revealed the blood type as a variant of blood group B. Subgroup of B is a very rare phenotype of blood. This is the first case ever detected in Kurdistan blood transfusion Center. CP - IRAN IN - Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran LG - eng PB - IJBC PG - 61 PT - Case report YR - 2018