Table 2.

Distribution of ABO antibody titers according to gender

^*The titers measured by the IS tube method were higher in females than in males (P=0.005, Mann-Whitney test), but titers by other methods showed no statistical differences between genders.

Abbreviations: IS, immediate spin; AHG, anti-human globulin; CAT, column agglutination technique; DTT, dithiothreitol.