WHO/BS/2019.2371 WHO IRRs for Blood Group Genotyping

Overview

Nearly 390 antigens organized in 36 blood group systems are recognized by the International Society of Blood Transfusion (ISBT), and the genetic background for most of these blood group antigens is known 1 . As a result, blood group genotyping methods for donor/recipient matching are becoming widely used to overcome serological typing limitations encountered by immunohematology laboratories 2-4 .