would this work for entering USVI from US? https://learn.vaulthealth.com/jetblue/ Maybe not because USVI travel portal needs more time to approve paperwork you submit to portal? . . . .

Has anyone used this? Thanks

Seems like they would as its a valid PCR test. You can fill the paperwork in nearly up to the last minute. Our flight was 7am on a Saturday and I filled out the portal paperwork at 11am the Friday before. So if you go the test done close to the 5 day window, you should have plenty of time. USVI accepts antigen tests as well though - pretty easy to get at many places. We did ours before our trip at CVS after PCR tests didn't come back in time. Technically they did, but showed up at midnight, 7 hours before our flight. Wasn't going to take that chance and it would have been stressful getting up for our flights and having to fill in the paperwork at that time as well.

Oh you are right didn't realize PCR test. My concern for any test is after you upload your results and other paperwork to portal how long does it take for a good to go approval, and if approval or QR code is sent to you do you have to have wifi at time of showing to whomever needs to see it or is it something you can download and have on your phone

The approval came back very quickly. We got ours in about 30 minutes. You can just save the email, it has the QR code in it.