Trawsblaniad llwyddiannus gan roddwr byw (yn hytrach na gan rywun sydd wedi marw) yw'r driniaeth orau i'r rhan fwyaf o bobl sy'n dioddef methiant yr arennau. Dyma sy'n cynnig y cyfle gorau i'r derbynnydd, gan fod 82% o arennau sy'n cael eu rhoi gan roddwyr byw yn parhau i weithio ar ôl 10 mlynedd. Mae hyn o gymharu â 75% ar gyfer arennau wedi'u trawsblannu o roddwr sydd wedi marw.
A successful transplant from a living donor (rather than one from someone who has died) is the best treatment for most people with kidney failure. This offers the recipient the best opportunity of success as 82% of kidneys donated by a living donor will still be working after 10 years. This compares with 75% for kidneys transplanted from deceased donors.