An antigen test was given emergency use authorization by the FDA in early May. A biochemist explains how COVID-19 antigen tests work.
As we start to test people without symptoms for COVID-19, the likelihood of generating false positive tests goes up. Here's why that's a problem.
Expanding coronavirus testing is one of the most important tasks public health officials are tackling right now. But questions over accuracy of the two main types of tests have rightly caused concern.
A test that tells you with 94% accuracy that you have had coronavirus seems like a game-changer...until you do the maths.