Serologic RhD‐negative blood donors are tested by a method known to detect weak D antigen expression. Serology does not detect all red blood cells with RhD expression and RHD genotyping… Click to show full abstract
Serologic RhD‐negative blood donors are tested by a method known to detect weak D antigen expression. Serology does not detect all red blood cells with RhD expression and RHD genotyping has been used to identify variant RHD alleles, which may lead to some RhD expression. The aim of this study was to determine the frequency of RHD variant alleles in serologic RhD‐negative blood donors at a hospital‐based donor center in Los Angeles.
               
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