O negative (O−) blood: who it can help
Red cells from O negative can go to every patient, which is why hospitals keep it for emergencies when there is no time to test.
Can give red cells to
O−, O+, A−, A+, B−, B+, AB−, AB+
Can receive red cells from
O−
Plasma can go to
O (any Rh)
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Who can a O− donor give blood to?
Red cells from O− can go to: O−, O+, A−, A+, B−, B+, AB−, AB+.
Who can give blood to a O− patient?
A O− patient can receive red cells from: O−.