In late March, as the coronavirus sent India into a nationwide lockdown, Dr Arvind Lal, 70, sprang into action. His Dr Lal PathLabs, one of India's largest diagnostic chains, quickly won regulatory approval to conduct Covid-19 tests, becoming one of the first private labs able to test the country's masses.
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(This story appears in the 03 July, 2020 issue of Forbes India. To visit our Archives, click here.)