bhargava: Covid-19: RAT, self-kit tests helps in early detection; backbone of testing amid surge, says Balram Bhargava | India News

NEW DELHI: Commonly used lateral flow tests such as rapid-antigen tests (RAT) and home-antigen tests (HAT) helps in early detection of Covid-19 from the third day to the eighth day – when the viral load is maximum – from start of the infection and have, therefore, become the backbone of testing during the present surge powered by Omicron, the Indian Council of Medical Research (ICMR) Director General Balram Bhargava said.
However, RT-PCR tests – which were considered the gold standard tests during the previous surges – can detect certain non-infective RNA particles even after the eighth day, leading to positive results.
Primarily, the six-day period (from the third day to the eighth day since exposure) is the ‘infectious period’ and that is also the reason why the discharge policy and isolation policy are focused on discharge after seven days, Bhargava said.
Underlining that…

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