Upvote:1
PCR tests take a few hours to process, so 48 hours is more than sufficient if there aren't bottlenecks in the test lab. For example, a Seattle company called Atlas Genomics advertises the following:
We provide travel testing with same day results. Please call xxx.xxx.xxxx
Atlas Covid-19 tests are being accepted by Hawaii due to our partnership with Discovery Health who is on the list of Trusted Partners.
Out of interest, I gave Atlas Genomics a call and they said they can do a same-day test Mon-Fri for $149, as long as you show up for the test before 12pm. So you could probably get tested on a Monday morning, email the Chinese consulate on Monday evening, get a confirmation Tuesday afternoon and fly out Wednesday morning - around 48 hours after taking your test.
You should be able to locate a similar lab with premium test processing in your area. Depending on the country/state, even free testing might be fast enough - my own free COVID test here in Seattle took less than 48 hours to process.
Upvote:2
Are these requirements even doable?
Yes if your area has decent COVID-19 testing facilities.
As JonathanReez mentioned, PCR results can be obtained within the same day.
The same applies to anti-body tests, e.g. from https://www.fda.gov/consumers/consumer-updates/coronavirus-testing-basics:
E.g. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177139/:
The ALLTEST 2019-nCoV IgG/IgM Rapid Test Cassette is a rapid LFIA (turn-around time within 15 min) that uses a recombinant SARS-CoV-2 N protein to detect both IgM and IgG antibodies.
https://www.fda.gov/media/139792/download:
FYI: COVID-19 Testing FAQs from the American Society for Microbiology (mirror).