Dywedodd mwy na hanner yr ymatebwyr i Arolwg Omnibws Cymru ym mis Medi 2017 eu bod wedi trafod eu dymuniadau o ran rhoi organau gydag aelod o'r teulu. Arhosodd y ffigur hwn yn sefydlog rhwng 2012 a 2015, ar bedwar o bobl deg, ond mae wedi cynyddu ers hynny.
More than half of respondents in the September 2017 Wales Omnibus Survey said they had discussed their organ donation wishes with a family member. This figure remained at around 4 out of 10 between 2012 and 2015 but has increased since.