Now approved by the FDA, but already in use in other countries. The sooner we can get it everywhere here, the better. It might take a week or two. Obviously, if you have recovered from a confirmed case, you are good to go.
Despite the careful caveats in the article, what a positive test basically tells you is that you have been exposed to covid and have immunity to it. That means you have no to minimal risk, and are no risk to anybody else.