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Check whether the COVID-19 test is FDA-approved. These manufacturers and brand names have been approved by the FDA: Abbott Diagnostics' BinaxNow. SD Biosensor's COVID-19 At-Home Test. Siemens ...
In the most basic sense, there are four possible outcomes for a COVID-19 test, whether it’s molecular PCR or rapid antigen: true positive, true negative, false positive, and false negative.
The FDA has a list online of authorized home COVID-19 tests, along with links to “updated expiration dates” so you can check to see if your test’s expiration date has been extended.
Also in October 2021, Ellume recalled more than 2.2 million of its home tests because of "higher-than-acceptable false positive test results for SARS-CoV-2". [91] In December 2021, US president Biden announced that the government planned to purchase and distribute for free 500 million at-home COVID-19 RATs. [92]
Accuracy is measured in terms of specificity and selectivity. Test errors can be false positives (the test is positive, but the virus is not present) or false negatives, (the test is negative, but the virus is present). [179] In a study of over 900,000 rapid antigen tests, false positives were found to occur at a rate of 0.05% or 1 in 2000. [180]
If you test positive for COVID-19, stay home and isolate away from others in your household for at least five days, which is when you’re likely to be the most contagious, per the CDC. (If you ...
On the same day that the Centers for Disease Control and Prevention eased COVID-19 guidelines, the Food and Drug Administration issued a statement warning that at-home rapid antigen tests can ...
If you test negative using an at-home test, repeat the test again in 48 hours. If you were exposed to COVID, test at least 5 full days after exposure. If you still test negative, wait 48 more ...