Le khithi yenzelwe ukufumanisa umgangatho we-in vitro wenoveli coronavirus (SARS-CoV-2) kwiisampulu ze-nasopharyngeal kunye ne-oropharyngeal swab.I-RNA evela kwi-SARS-CoV-2 ibonwa ngokubanzi kwisampulu yokuphefumla ngexesha elibukhali losulelo okanye abantu abangenazimpawu.Ingasetyenziswa ngakumbi ubhaqo olusemgangathweni kunye nokwahlulahlula iAlpha, iBeta, iGamma, iDelta kunye neOmicron.