Defnyddir y swabiau hyn i samplu am Covid-19 mewn ysbytai, mewn unedau profi cymunedol a reolir gan fyrddau iechyd, ac unedau profi symudol a reolir gan Wasanaethau Ambiwlans Cymru (WAST).  Ni ddefnyddir y swabiau hyn gan y labordai Lighthouse felly mae profion a wneir drwy ein safleoedd profi rhanbarthol a lleol heb eu heffeithio.
These swabs are used to sample for Covid-19 in hospital settings, at health board-run community testing units and WAST-operated mobile testing units. These swabs are not used by the lighthouse labs and so tests undertaken through our regional and local testing sites are unaffected.