Starting Saturday, private insurers must cover the cost of up to eight at-home Covid-19 tests per month, the Biden administration announced on Tuesday.

"We are requiring insurers and group health plans to make tests free for millions of Americans. This is all part of our overall strategy to ramp-up access to easy-to-use, at-home tests at no cost," said U.S. Department of Health and Human Services (HHS) Secretary Xavier Becerra, in a statement.