‘Health Ministry experts have explained their rationale for choosing between RT-PCR tests and antigen-based rapid test kits (RTK-Ag) for detecting Covid-19 cases.
‘The RT-PCR is more accurate but takes longer to process, and is preferred for confirming Covid-19 infections. It can be used for mass testing using the “pool testing” method but only where virus prevalence was low.
‘The RTK-Ag is useful as a mass screening tool due to its far shorter turnaround time. Even with lower accuracy, it can be used as a confirmatory test if a patient has a high probability of being infected.’
Read here (Malaysiakini, Feb 6, 2021)