Explainer: How ministry decides between RT-PCR and RTK to test for Covid-19

Annabelle Lee

Modified 6 Feb 2021, 8:18 am

COVID-19 | 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.

More accurate but take longer to process, the RT-PCR is best for confirming Covid-19 infections. It can be used for mass testing using the “pool testing” method but only where virus prevalence was low...

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