Reference
Blood compatibility chart.
Rows are the patient receiving blood. Columns are the donor. A filled cell means that transfusion is safe for red cells. O- can give to everyone; AB+ can receive from everyone.
| Patient \ Donor | O- | O+ | B- | B+ | A- | A+ | AB- | AB+ |
|---|---|---|---|---|---|---|---|---|
| O- | ✓ | – | – | – | – | – | – | – |
| O+ | ✓ | ✓ | – | – | – | – | – | – |
| B- | ✓ | – | ✓ | – | – | – | – | – |
| B+ | ✓ | ✓ | ✓ | ✓ | – | – | – | – |
| A- | ✓ | – | – | – | ✓ | – | – | – |
| A+ | ✓ | ✓ | – | – | ✓ | ✓ | – | – |
| AB- | ✓ | – | ✓ | – | ✓ | – | ✓ | – |
| AB+ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |