![]() One note: Make sure you look for the Flow flex in a white box. And it's one of the few rapid COVID tests available at Costco, so you can stock up on five tests at once if it's in stock. ![]() It also tends to be in stock more than other brands, we've found. What's more, in a brand-backed study submitted to the FDA of both symptomatic and asymptomatic people, Flow flex correctly identified 93% of positive cases and 100% of negative cases compared to a PCR test. Because of that, it has a few more steps, but in our testing, we found the instructions very clear and easy to follow. The Acon Flow flex COVID-19 Antigen Home Test is a lateral flow test, which is different than the other rapid tests on our list. Where to buy it: Walgreens, CVS, King Soopers/Kroger, Target, Costco.(Note: If a PCR test comes back positive for the first time, you need to The rapid test will confirm if you're positive immediately, and if it's negative, the PCR will take a few more days to confirm if that's a false negative or not because it's more sensitive. Ideally, if you have symptoms or you've been exposed to someone who has COVID, you want to take both a PCR and a rapid test, says Erika Schwartz, MD, internist, and author of seven books, including "Don't Let Your Doctor Kill You." (The FDA did find one, from Tide Laboratories, can't detect Omicron.) PCR tests (also called molecular or NAAT) require you to mail off your nasal swab and then take 1-3 days to deliver your results however, they're roughly 98% accurate at detecting COVID-19 and the vast majority do detect Omicron. ![]() If you get a negative rapid COVID test, you should either take another every three to seven days for 10 days or take a PCR test. The problem: Rapid tests aren't as good at detecting COVID if you're asymptomatic or in the early or late stages of being infected, David Aronoff, MD, internal medicine and infectious disease specialist and chair of the department of medicine at Indiana University pointed out during the medical review of this piece.īecause of that, studies show they only correctly identify a positive COVID infection 58-72% of the time. If your rapid test comes back positive, you are very, very likely to be contagious at the moment, shedding intact virus particles. Despite rumors, they are able to detect the Omicron variant just as well as previous strains. First thing's first - there are two main types of at-home COVID test kits: rapid/antigen tests and molecular/PCR tests.Īntigen or rapid COVID tests are taken at home and will tell you you're positive after just 10-20 minutes.
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