American Airlines is now allowing AAdvantage members to redeem miles for COVID-19 tests. For only 12,000 miles, you can order an at-home COVID-19 testing kit through LetsGetChecked. The company is a direct-to-consumer at-home health testing business. Their test incorporates a nasal swab at-home which you mail to the lab for PCR analysis. Typically, a test result is available on-line within 24-72 hours . The test is Federal Drug Administration approved under emergency use authorization provisions.  Just be sure this lab is an approved one for your specific destination.