Not all blood groups are compatible with one another, so your donation is matched to patients whose blood group is compatible with yours.
| If you are | Ideal donation type | Your donation can help |
| O+ | Whole blood | O+, A+, B+ and AB+ patients |
| O– | Whole blood or double red cells | Patients of all blood types (O+, A+, B+, AB+, O–, A–, B– and AB–) |
| A+ | Whole blood | A+ and AB+ patients |
| A– | Whole blood | A–, A+, AB– and AB+ patients |
| B+ | Whole blood | B+ and AB+ patients |
| B– | Whole blood | B–, B+, AB– and AB+ patients |
| AB+ | Platelets or plasma | Patients of all blood types (O+, A+, B+, AB+) |
| AB– | Platelets or plasma | Patients of all blood types (O+, A+, B+, AB+, O–, A–, B– and AB–) |
Find your blood type below to see what your donation does.