Antigen

The cheap, simple-to-use test could miss as many as 4 in 10 cases of SARS-CoV-2 infection. However, its developers argue that as part of triage for suspected cases, the test could help conserve scarce resources for more sensitive laboratory testing.Share on PinterestA new antigen test could tell if someone has contracted SARS-CoV-2 in as little…

An illustration shows spiky antigens studding the virus's outer coat. Tests under development that look for these antigens might be faster than PCR tests for diagnosing COVID-19, proponents say. But the tests might still need PCR-test confirmation. Sergii Iaremenko/Science Photo Library/Getty Images hide caption toggle caption Sergii Iaremenko/Science Photo Library/Getty Images An illustration shows spiky…

(CNN)Dr. Deborah Birx, the White House coronavirus response coordinator, says current technology makes it impossible to test every American for coronavirus. The United States, she says, will need a "breakthrough" in testing to screen large numbers of people. …