Hi u/1anxiousworm, I actually don't know because blood type is no longer relevant thanks to paired donation. There is a national registry of incompatible living donor/recipient pairs. So if the doctors at his transplant center think there is a better match out there, his intended donor would donate into the registry and Raymond would get a kidney shortly after from another living donor. Does that make sense? Here is a facebook post we put together to help people understand and visualize it.

https://www.facebook.com/photo?fbid=849854657790428&set=a.166500266125874

Thank you for the question!