On days six and seven of their self-isolation period they should take lateral flow tests and if these tests – taken 24 hours apart – are positive, they should continue to self-isolate.
Ar ddiwrnodau chwech a saith o'u cyfnod hunanynysu dylent gymryd profion llif unffordd ac os yw'r profion hyn – i’w cymryd 24 awr ar wahân – yn bositif dylent barhau i hunanynysu.