Rapid-testing kit
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Rapid antigen COVID-19 tests cost about $24 for an over-the-counter kit.

American households can now order a set of four rapid COVID-19 antigen tests, which ship free starting in late January through the U.S. Postal Service. An online order form can be found here.

A website for the free testing roll-out, COVIDtests.gov, went live for "beta testing" Tuesday, White House press secretary Jen Psaki said, with a formal launch set for Wednesday. According to the website, orders will usually ship in seven to 12 days. "Order your tests now so you have them when you need them," the website advises.