National Allocation formula
State Allocation
Interstate Utilisation Algorithm

Appendix C

Kidney allocation algorithms

National Allocation formula

State Allocation

  • Allocation initially matched with restriction applied (EPTS-KDPI <=50) then unrestricted matching is applied
  • KPDI max at clinician’s discretion.

Additional scores

  • Paediatric bonus of 100 000 for restricted algorithms – state HLA and state waiting
  • Recipient and donor are HLA DRB1 homozygous—bonus 500 000 to state HLA matching algorithms only.

In the event that more than one patient has the same score, the ranking is randomised.

Interstate Utilisation Algorithm

In rare situations there may not be enough patients in a given state to be able to accept the available kidneys. Most often this occurs if the donor has a rarer blood group, such as AB. If there are not enough patients to receive the kidneys locally, a national interstate Utilisation is run. This list incorporates patients from across the country, to ensure that the kidneys do not go to waste.

ABO selection rules

The ABO selection rules determine the acceptable organ matches, as shown: