Fodd bynnag, rhaid inni osgoi mynd yn hunanfodlon. Nid yw dyfeisiau llif unffordd mor sensitif â’r profion RT-PCR rydym yn eu defnyddio ar hyn o bryd mewn rhaglenni profi eraill, gan gynnwys rhaglenni sgrinio unigolion asymptotig ac felly ni fyddant yn canfod 100% o’r achosion positif. Felly, nid yw canlyniad prawf negatif yn rhoi ‘pas rydd’ a rhaid parhau i ddilyn gweithdrefnau atal a rheoli heintiau, fel hylendid dwylo, gwisgo cyfarpar diogelwch personol a chadw pellter cymdeithasol priodol. Yn yr un modd, rhaid rhoi gwybod i’r gwasanaeth Profi, Olrhain, Diogelu am unrhyw ganlyniad positif a bydd angen cadarnhau canlyniad gyda phrawf dilynol. Byddwn yn rhoi cyflenwad o becynnau RT-PCR profi gartref, yn arbennig ar gyfer yr ymwelwyr hynny sy’n cael canlyniad prawf positif am COVID-19.
However we must not allow ourselves to become complacent. LFDs are not as sensitive as the RT-PCR tests we currently use in other testing programmes, including the asymptomatic screening programme and so will not detect 100% of positive cases.  Therefore a negative test does not give us a ‘free pass’ and appropriate infection prevention and control procedures, such as hand hygiene and PPE, and appropriate social distancing must continue to be followed. Similarly, any positive result must be reported to the Test, Trace Protect service and will need to be confirmed with a follow-up test; we will be providing care homes with a supply of at-home RT-PCR test kits, specifically for those visitors who do test positive for Covid-19. .