Also when thinking about accuracy, I think it's helpful to distinguish between testing for public health, and testing for medical diagnosis/treatment. Antigen tests tend to be cheaper and have better sensitivity when the person is most likely to be contagious, for example, which, likely make them more suited for public health-oriented frequent, mass-testing.
https://www.lucirahealth.com/
Also when thinking about accuracy, I think it's helpful to distinguish between testing for public health, and testing for medical diagnosis/treatment. Antigen tests tend to be cheaper and have better sensitivity when the person is most likely to be contagious, for example, which, likely make them more suited for public health-oriented frequent, mass-testing.