Not quite pcr, but there's the Metrix tests.
https://shop.aptitudemedical.com/products/metrix-covid-19-test
PlusLife unfortunately will not sell to the US but there are folks out there buying them outside and then shipping them in. So if you have a buddy outside the us, you can try that.
https://www.pluslife.com/productinfo/1207328.html
Both are pretty expensive though when you start adding things up.