Working together. Saving lives.

This game made possible by a lifesaving organ transplant.

Brother-sister time made possible by the gift of life.

Mother-daughter time made possible by the gift of an organ transplant.

Day on the lake made possible by the gift of an organ transplant.

Partnership made possible by the gift of an organ transplant.

Organ donation advocates made possible by the gift of life.

Working together. Saving lives.

Our mission is to advance organ availability and transplantation to support patients through education, technology and policy development.

How organ matching works

Understand the basic path to donation

UNOS’ computer system stores information about every person who is waiting for a transplant, and matches donor organs with transplant candidates 24 hours a day, 365 days a year. When a patient is “added to the list,” a transplant hospital adds a patient’s medical information into UNOS’ computer system. The patient is not immediately placed on a ranked list. When a deceased organ donor is identified, UNOS’ computer system generates a ranked list of transplant candidates who are suitable to receive each organ. Factors affecting ranking may include blood type, tissue type, medical urgency, waiting time, expected benefit, geography and other criteria. Learn more >


  • You can be a donor at any age.
  • Celebrity or financial status are not factors in getting a transplant.
  • Donation is possible with many medical conditions.
  • All major religions approve of organ and tissue donation.
  • A national computer system and strict standards are in place to ensure ethical and fair distribution of organs.
  • A healthy person can become a living donor by donating a kidney, or a part of the liver, lung, intestine, blood or bone marrow.
  • Learn more organ donation facts.

Upcoming events

Fri 09
Sun 04

American College of Surgeons 2015 Clinical Congress

October 4 - October 8
Chicago IL
Fri 09
Thu 08
Wed 14

OPTN/UNOS Region 5 Collaborative

October 14
Las Vegas NV
Wed 14

OPTN/UNOS Region 8 Meeting

October 14
Kansas City MO
Wed 14

OPTN/UNOS Region 9 Meeting

October 14
Rochester NY