**2.3 Timing of referral**

In general referral for transplantation evaluation is recommended when the patient's median survival (50%) is about 2 years or less or New York Heart Association class 3 or 4. Due to the natural history of underlying disease, the referral time will depend on the underlying disease. The waiting period for transplant depends on underlying disease, waiting time, blood group, height of patient and presence of pre-formed antibodies in the recipient.
