There is a simple solution for Covid testing required to enter the U.S.
Testing can be done from the convenience of your hotel by doing the following. You can order a home test kit prior to departing for your trip. One source is
https://store.optum.com/ , the cost is $69.99 for 2 tests, this includes fast shipping from FedEx. Another is
https://rn-wellness.com/collections/ind ... -hEALw_wcBWhich sells for $50.00 for 2 including shipping.
A much cheaper option is Walmart for $18.00 for 2 tests or CVS for $20.00 for 2 tests, as well as Wahlgreens and I’m sure most drug stores and many other stores but I don’t know the prices. but much harder to find because of stock shortages. I have only researched the Abbott Test kit and I do not know if other companies are offering the same service.
Before you depart for your trip you need to download a phone app called NAVICA install it and set up your account. When ready to test the app will guide you through the whole process. This is accepted by most airlines near as I can tell but it would not hurt to insure your airline accepts it.
In Costa Rica you still have multiple places offering the test but most are around $85 plus the cab fare to get the test. I have used the airport site as they are open 24 - 7. Another 24 - site is
https://salud.go.cr/step1 .
Again this is information only for the Abbot rapid test and I’m sure there are other options out there but the only one I know for sure is Abbot.
I did this on my last trip and it worked perfect. From start to finish took about 30 minutes and 15 minutes of that was spent waiting for the test to give the results. Did it from the kitchen table in my Air bnb. There was no additional cost for the administration of the test. The only cost was for the test itself.
You do need an internet connection to go to a website where you will be monitored and given step by step instructions by a test proctor who watches you as you go through the test steps.
Also I do believe you must set up the NAVICA App while you are in the states.