Prevalence of A2 and A2B Subgroups and Anti-A1 Antibody in Blood Donors in Jazan, Saudi Arabia.
Muhammad SaboorAmtuz ZehraHassan A HamaliAmr Jamal HalawaniAbdullah A MobarkiAymen M MadkhaliSaleh Mohammed AbdullahPublished in: International journal of general medicine (2020)
A2 and A2B were the rarest among ABO phenotypes in the studied population. Although rare, anti-A1 antibody is not so uncommon. Care shall be taken during routine ABO grouping especially in cases of mix-field or weak positive reactions in A and AB phenotypes.