Blood Types
Every person has a certain blood type that is determined by antigens attached to their red blood cells. Antigens are classified as A, B, AB and O. Each of those can be either Rh positive or Rh negative. In the charts below, you can see the prevalence of each of the blood types and their possible transfusion combinations.
| Blood Type | Prevalence in U.S. | Can Be Given to Patients with Types: |
|---|---|---|
| O+ | 38% | O+, A+, B+, AB+ |
| O- | 7% | O+, A+, B+, AB+, O-, A-, B-, AB- |
| A+ | 34% | A+, AB+ |
| A- | 6% | A+, AB+, A-, AB- |
| B+ | 9% | B+, AB+ |
| B- | 2% | B+, AB+, B-, AB- |
| AB+ | 3% | AB+ |
| AB- | 1% | AB+, AB- |
Click on your blood type to learn more about your blood type and the component you should donate.