AB Positive (AB+) Blood Group
AB+ is group AB with RhD-positive status. For red-cell transfusion, group AB recipients can receive compatible red cells from A, B, AB or O groups under standard ABO rules, with RhD compatibility considered.
Medical information notice: This article explains general blood-group concepts. Actual transfusion decisions are made by qualified clinical and transfusion-service staff after appropriate testing.
What does AB Positive (AB+) mean?
AB+ is group AB with RhD-positive status. For red-cell transfusion, group AB recipients can receive compatible red cells from A, B, AB or O groups under standard ABO rules, with RhD compatibility considered.
Red-cell compatibility
AB+ red cells are compatible with AB+ recipients under standard ABO/Rh red-cell rules. AB plasma has different compatibility rules, so red-cell and plasma compatibility should not be mixed together.
Why compatibility testing still matters
Blood components follow different compatibility patterns. WHO specifically distinguishes red-cell compatibility from plasma compatibility.
Sources
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