doctor, thank you for coming on tonight. this is something that you have been hoping for for an awfully long time. what is this exactly? >> tucker, this is called point-of-care testing. rapid testing that can give you results in just a few minutes. there are a few different kinds of tests, one when you test for the virus itself. the other where you do a blood test, you test for immunity. that is what you're talking about tonight. silex was approved to see whether we can tell who has had this virus and who is immune to it. who can go back into society. we are not entirely there yet. i spoke to admiral gerard today who was the assistant secretary of hhs under alex azar. he is in charge of testing for the president's task force but here's what he said. he acknowledged a test we have already, the ones that are on the big mobile units s that require all of his protective reequipment, they have a 1 out of 3 rate of notal getting