Covid-19 antigen test: How does it work?

Following an ICMR advisory, Karnataka recently updated its testing strategy for Covid-19, making antigen testing the first level response at government hospitals and fever clinics. These tests deliver quicker results and are intended to take some stress off the RT-PCR labs. But are they as reliable as RT-PCR tests? And what is the process that is being followed? Amulya has all the details.

Click here to watch our video on ICMR's strategy:
https://youtu.be/w_Ixi3RClYs