Those COVID tests the government sent you might not work. Cold weather could be to blame.

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Those COVID tests the government sent you might not work. Cold weather could be to blame.
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At the same time most Americans are facing cold fronts and winter storms, they're also expecting their at-home COVID-19 tests from the government to arrive in the mail.

What does it mean if your at-home tests comes in the mail and it's cold?

"Just as anything with liquid, if it's chilled or frozen, it changes. That's the same with these at-home tests," Baird said. "At a time where temperatures are freezing in most places, it's safer to choose another test."Most studies have found a change in the temperature of the at-home test may result in a false-negative test rather than a false-positive, she added.

“Consequences may include false-negative test results,” the researchers wrote. “Storage and operation of [antigen tests] at recommended conditions is essential for successful usage during the pandemic.”What to do if your test comes in the mail cold or frozen Baird recommends waiting at least four to five hours before using the cold or frozen at-home test. Fortunately, the packaging of the tests was created to be durable through the shipping and arrival process.

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