Determination of ABO blood group for transfusion candidates. Blood grouping of expectant mothers and newborns may indicate potential for ABO hemolytic disease of the fetus/newborn.

Abnormal plasma proteins, cold autoagglutinins, positive direct antiglobulin test, and, in some cases, bacteremia may interfere with test interpretation.

Fung MK, Grossman JB, Hillyer CD, Westhoff CM, eds. AABB Technical Manual. 18th ed. 2014.