Listen to the TWiV episode. The idea behind the cheap test is that it picks up COVID at maybe a billion times greater viral load than an RT-PCR test would. If

Listen to the TWiV episode. The idea behind the cheap test is that it picks up COVID at maybe a billion times greater viral load than an RT-PCR test would. If a billion sounds like a lot, it’s not. The virus goes from undetectable to rampant within hours. The cheap test will miss out the very early stage of infection. But we are talking hours. Such a cheap test could allow kids to go to school or adults to go to work. It would be revolutionary.