Returning to United States - Which Covid Test?

What airline do you fly back? On the website of airline, they give a clear instrucstion what test is acceptable. I bought the test kit from Emed website and bring them with me. I flew Delta from Iceland back to states.
Delta and United accept Abbott's BinaxNOW COVID-19 Ag test
https://www.emed.com/products/covid-at-home-testkit-six-pack?hsLang=en
So I guess, you could take Rapid antigen test. Hope my info help.

This is on Delta website.
"What types of tests are accepted and what information must be included on my test result?
The accepted test types are:

Nucleic acid amplification test (NAAT), for example:
RT-PCR test
LAMP test
TMA test
Antigen test"

1 or 2, guidance is per the CDC. https://www.cdc.gov/coronavirus/2019-ncov/travelers/testing-international-air-travelers.html

What types of SARS-CoV-2 test are acceptable under the Order?
Passengers must be tested with a viral test that could be either an antigen test or a nucleic acid amplification test (NAAT). Examples of available NAATs for SARS-CoV-2 include but are not restricted to reverse transcription polymerase chain reaction (RT-PCR), reverse transcription loop-mediated isothermal amplification (RT-LAMP), transcription-mediated amplification (TMA), nicking enzyme amplification reaction (NEAR), and helicase-dependent amplification (HDA). The test used must be authorized for use by the relevant national authority for the detection of SARS-CoV-2 in the country where the test is administered. A viral test conducted for U.S. Department of Defense (DOD) personnel, including DOD contractors, dependents, and other U.S. government employees, and tested by a DOD laboratory located in a foreign country also meets the requirements of the Order.

Delta said they not accept antibody test. I don't know it is the same as Rapid Antibody test.

Note: Antibody tests are not accepted.

https://www.delta.com/us/en/travel-planning-center/know-before-you-go/us-entry-requirements#:~:text=Frequently%20Asked%20Questions-,U.S.%20Entry%20Requirements,attestation%20confirming%20a%20negative%20result.

That makes sense, the US doesn't accept antibody tests.

Thanks everyone.

I see it now that antibody tests are not accepted. I return to USA next Friday so my plan is to get the anti gen test 72 hours before leaving. Then if in the very unlikely event that it's positive, that gives me two more days to secure negative test and get PCR test to confirm. If those were positive then that would mean I must have been reinfected (again highly unlikely) and in which case I'd have to quarantine but I triple checked and my travel insurance would cover those expenses and the flight re-booking.

Thanks again for helping me clarify. I feel like I can enjoy the rest of trip now and not worry.

Antigen test is fine.

Just remember that the U.S. standard is that the test needs to be within the 3 days prior to departure, not 72 hours.

Hi Tommy- do you mind sharing who you purchased your travel insurance through to include the Covid coverage?

Don’t mind at all. The company is called Allianz global. They were very easy to reach on the phone. They offered the insurance at the time I purchased my tickets from American Airlines. It was just over $40 and I felt worth it for the peace of mind. Btw - took antigen test 3 days before I left. Results in 15 minutes - negative so all went very smooth.

If antigen test is negative you don’t need a PCR.