oa South African Medical Journal - The incidence of the dangerous group O donor : results of the titration of one thousand consecutive sera



The anti-A and anti-B iso-agglutinin titre of 1,000 unselected group O donors has been investigated. Taking a titre of 1 / 200 as dangerous, 221 of the donors tested would be classified as unsafe for transfusing patients belonging to groups other than O.


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