New scientific and theoretical contribution Through application of red cell panel manufactured at the National Institute of Hematology and Blood transfusion for the detection of unexpected antibodies in 9860 hematological patients and blood group antigen compatible transfusion for 110 hematological patients showed: - The rate of unexpected Abs detected in patients with hematological diseases, thalassemia, myelodysplastic syndrome (MDS) and acute leukemia were respectively 3.4%, 6.9%, 5.7% and 1%.