Blood groups: who can give to whom

Tap a group to see who it can help. Then find out more about each one below.

Who can your blood help?

Choose a blood group.

The full chart

Red cells: donor (rows) to patient (columns)
DonorO−O+A−A+B−B+AB−AB+
O−●●●●●●●●
O+●●●●
A−●●●●
A+●●
B−●●●●
B+●●
AB−●●
AB+●

Plasma works the other way round: AB plasma can go to everyone, O plasma only to O patients. Platelets have their own rules; the blood bank always decides.

Each blood group

O− O negative

Gives red cells to 8 of 8 groups; receives from 1.

O+ O positive

Gives red cells to 4 of 8 groups; receives from 2.

A− A negative

Gives red cells to 4 of 8 groups; receives from 2.

A+ A positive

Gives red cells to 2 of 8 groups; receives from 4.

B− B negative

Gives red cells to 4 of 8 groups; receives from 2.

B+ B positive

Gives red cells to 2 of 8 groups; receives from 4.

AB− AB negative

Gives red cells to 2 of 8 groups; receives from 4.

AB+ AB positive

Gives red cells to 1 of 8 groups; receives from 8.

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