Abstract: Objective To understand the blood groups and suspicious blood group testing. Methods 342 145 blood samples were retrospectively analysed in the routine tests of ABO blood type and RhD blood type in the blood center from 2014 to 2015. The ABO blood type discrepancy,O type cell agglutination,and RhD negative samples were identified. Results ABO blood typing in donors revealed B（34.78%）> O（30.59%）>A（25.00%）>AB（9.62%）. 2 025 case of RhD negative samples were screened out,among them 1 888 cases（93.23%） were identified as negative RhD type and 137 cases（6.77%）of D type variants 127 cases of suspicious blood type included 67 cases of weakly positive/negative antibodies,8 cases of low antigenicity,31 cases of subtypes,16 cases of irregular antibodies,4 cases of cold agglutination,and one case of autoantibodies. Conclusion It is significant for appropriate planning of donors recruitments and specified blood typing to analyze blood type detections.

Key words: Blood donor, ABO blood type, RhD blood type