![]() Test results are available in 15 minutes. The two BinaxNow testing kits are meant to be used 36 hours apart, for accuracy in case a person gets a false negative. ![]() Overall, experts say, people should use antigen tests about three to five days after exposure to the coronavirus, and use a PCR test - often required by schools or other workplaces - for added clarity. ![]() The PCR test, by contrast, is more like a key that fits into a lock, he said. “It’s maybe like a child in a field looking for a helium balloon, and the balloon has to be huge and bright for the child who is the instrument, but if there are balloons that are deflated and small, the antigen won’t pick it up.” “The (antigen test) is kind of a coarse instrument,” said Chin-Hong. “At cost” means that the seller would not make profits, but it was not immediately clear what the new price would be.īinaxNow and Ellume are the same in terms of how they collect samples, according to UCSF infectious disease expert Peter-Chin Hong.īoth are “better at detecting people with symptoms rather than people without symptoms,” he said.Īntigen tests, which detect proteins from the coronavirus, are less accurate than polymerase chain reaction or PCR tests, which examine small amounts of the virus’ genetic material, said Chin-Hong. President Biden said on Thursday that his administration would use federal law to ramp up production of rapid home tests, and also ensure that retailers including Walmart, Amazon and Kroger sell test kits “at cost” starting most likely next week. “We typically don’t recommend Ellume because it’s more expensive,” said Nam Tran, a professor of pathology and laboratory medicine at UC Davis and a member of California’s COVID-19 Testing Task Force, who noted that in Davis, BinaxNow is virtually nowhere to be found. Ellume has only one test swab and is sold in most places for $38.99. The product, made by Abbott Laboratories, comes in a two-test kit and is sold for around $23.99. Even if you are able to place an online order, the tests may not be shipped immediately due to the high demand.īinaxNow is cheaper than Ellume, but it’s still a significant cost. ![]() Online, too, many retailers - including Walgreens and Walmart - appear to be out of stock of BinaxNow. Store employees said that supply was variable depending on the day. But at least in the Bay Area, it’s challenging to find a drugstore that isn’t sold out of BinaxNow, though Ellume is far easier to get.Ĭalls to numerous Bay Area drug stores - including CVS and Walgreens - found that many were sold out of BinaxNow but had Ellume kits available. The two at-home tests approved by the Food and Drug Administration are Abbott Laboratories’ BinaxNow and Ellume’s COVID-19 home test. ![]()
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