COVID-19 testing aims to identify those who are currently infected by the virus through a swab test or to identify those who have been exposed to the virus through an antibody test.
Nod profion COVID-19 yw canfod y bobl sydd wedi'u heintio gan y feirws ar hyn o bryd, drwy gynnal prawf swab, neu ganfod y bobl sydd wedi dod i gysylltiad â'r feirws, drwy gynnal prawf gwrthgyrff.