Issue with this (and other antibody tests) is both that levels of antibody vary wildly from person to person and across time.<p>The same person can show positive for a swab test, and then negative for antibody tests at months one and 2 and only start to show at month 3.<p>Equally some cases will never be revealed by an antibody test as the patient fought the virus solely with their T-cells - not antibodies.<p>-<p>This obviously doesn't mean that a cheap and reliable test is not of use - just that it will no doubt reveal more issues and edge cases with our understanding of the virus.
It comes with an app. We need to reverse engineer it and check it's security... It's not like we can trust the FDA to do that.<p><a href="https://apps.apple.com/us/app/id1527297235" rel="nofollow">https://apps.apple.com/us/app/id1527297235</a>