To be on the waiting list for a new organ is not the same as being on the waiting list for an operation. So that organ transplant can be as successful as possible the ‘right’ organ needs to be found for the ‘right’ recipient. This involves taking into account the size of the organ, blood type, and in some cases tissue type.
At any given time, about 400-500 people are on the waiting list for a new organ, in Norway. Most are awaiting a new kidney. The average waiting time varies from organ to organ.