Living Related Donors
Individuals who are blood relation to the transplant recipient such as parent, aunt, uncle, brother, sister, nephew, niece, etc.
Living Unrelated Donors
Individuals who are not blood relation to the transplant recipient and may include spouse, friend, neighbor, co-worker, brother-in-law, sister-in-law, etc.
Directed (Anonymous) / Non-Directed (Altruistic) Donors
Individuals who offer to donate a kidney to a transplant recipient on the waiting list. Donors and recipients do not know each other. The donation is made freely and with no expectations of financial gain.
Paired Exchange
An individual wishes to donate to a relative or friend but cannot because of incompatible blood types or cross match. If another pair is found in the same circumstance, an exchange may be possible between the two pairs.