Lateral flow tests can detect Covid from day 3 to day 8, for RT-PCR it's up to 20 days: ICMR DG https://ift.tt/eA8V8J

"It takes time for the virus to grow in your system and that is known as the latent period. From day three it will be detectable in the Lateral Flow Tests and up to day eight which is the infectious period," he said.

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