As India ramps up testing for COVID-19, there is a greater reliance on the rapid antigen test which has a high rate of returning false-negative results. The Delhi High Court recently pulled up the Delhi government for choosing this over the "gold-standard" RT-PCR test. We spoke with Dr Navin Dang, founder of Dr Dang Labs, to understand the reliability of the various Covid tests being used across the country and what the common man should do if they want to get tested.