[Serological and Molecular Biological Characteristics of AB Blood Group and Transfusion Strategies].

Objective: To analyze the serological and molecular biological characteristics of 5 patients with AB blood group, and to explore the safe transfusion strategy.

Methods: Serological identification of the samples' blood group was performed using anti-A, anti-B, anti-D, anti-A1, anti-H typing reagents and ABO reagent erythrocytes. Molecular biological identification of the samples' blood group was performed using PCR-SSP or gene sequencing.