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Check blood type compatibility and predict possible child blood types
Your Blood Type
A+
O- Universal Donor
Can donate to all types
AB+ Universal Recipient
Can receive from all types
Blood type is determined by the presence or absence of antigens on red blood cells. The ABO system has three antigens: A, B, and AB (both A and B present). Type O has neither antigen. The Rh system adds another antigen (D), making blood Rh+ or Rh-.
Blood type compatibility is critical for transfusions. Receiving incompatible blood can cause a severe immune reaction. That's why O- is the universal donor (can give to anyone) and AB+ is the universal recipient (can receive from anyone).
| Blood Type | US Population | Can Donate To | Can Receive From |
|---|---|---|---|
| O+ | 37% | O+, A+, B+, AB+ | O+, O- |
| O- | 7% | All types | O- |
| A+ | 34% | A+, AB+ | A+, A-, O+, O- |
| A- | 6% | A+, A-, AB+, AB- | A-, O- |
| B+ | 9% | B+, AB+ | B+, B-, O+, O- |
| B- | 2% | B+, B-, AB+, AB- | B-, O- |
| AB+ | 3% | AB+ | All types |
| AB- | 1% | AB+, AB- | AB-, A-, B-, O- |
If a mother is Rh- and the baby is Rh+, the mother's immune system may produce antibodies against the baby's blood cells. This is called Rh incompatibility and can affect future pregnancies.
Modern medicine addresses this with RhoGAM (Rh immune globulin), given during pregnancy and after delivery to prevent antibody formation.