My only comment at this time is that Mayo evaluates each patient and puts them on the transplant list according to needs. If, as in my case, all tests align except one, you will receive a transplant sooner than if you have a number of issues to match or work around. Some of the parameters I am aware of for SPK include: physical fitness, mental fitness, blood type, current function of native organ, and general health of individual. There are many more items checked, but the level of your fitness and health you can work on now in order to be prepared as well as possible for a transplant. OR, as in my case, put off a transplant indefinitely. Blessings on your journey.