Ann Marie Reynolds, now 32, was on a kidney transplant list for a third time and had less than a 1 percent chance of finding a match when she learned of UAB Hospital’s Paired Donation Program. Doctors at UAB used the organ exchange program to match Reynolds with a compatible donor in a three-way organ exchange that also paired two other hard-to-match kidney patients with compatible donors. The UAB program uses a computer system to match living donors with potential recipients.