Why Blood Type O Often Waits Longer for a Kidney
Type O can receive from type O. Type O donors can give more widely. That imbalance is why many O patients wait longer on the deceased-donor list.
The ABO rule, simply
Blood type is the first compatibility screen most people hear about. Type O recipients generally need type O donors. Type O donors can often donate to A, B, or AB as well — so those kidneys are in demand beyond O patients. A, B, and AB have other options. Your transplant center still confirms everything with a crossmatch and a full workup.
What matching compares
Kidney and liver matching uses organ type and self-reported ABO. Compatible signups appear on your private dashboard while your plan is active. If you need a donor, you need that membership.
If someone willing isn’t ABO-compatible
You order a Center & Options Review after coverage — so an Independent RN Navigator prepares the conversation with the program. If you still need more people, you still need matching.
Next: Start matching · Living donor vs the waitlist
This is general information, not medical advice. Your transplant team confirms blood type, crossmatch, and listing priority.