B negative (B−) blood: who it can help
B negative can give red cells to B and AB patients, both negative and positive.
Can give red cells to
B−, B+, AB−, AB+
Can receive red cells from
O−, B−
Plasma can go to
B (any Rh), O (any Rh)
Need blood?
Post a free request. Matching donors near the hospital get an alert in seconds.
Post a requestCan you give?
Become a donor in one minute. We only alert you when your blood group is needed nearby.
Become a donorQuick answers
Who can a B− donor give blood to?
Red cells from B− can go to: B−, B+, AB−, AB+.
Who can give blood to a B− patient?
A B− patient can receive red cells from: O−, B−.