COVID States Project: A 50-State COVID-19 Survey, Report #33: Update on COVID-19 Test Turnaround Times Across the Country [open pdf - 3MB]
From the Key Takeaways: "1) Average wait times for COVID-19 [coronavirus disease 2019] test results continue to fall steadily (from 3.9 days in March to 2.2 days in December). 2) Racial disparities still exist in testing times: in December, Hispanic and Black respondents waited 0.7 and 0.4 days longer than white respondents, respectively. 3) In December, the average respondent waited 2.4 days between seeking a test and obtaining a test. They waited another 2.2 days to receive test results. 4) Testing is still too slow to support effective contact tracing."
The COVID States Project Report No. 33
Northeastern University; Harvard University; Rutgers University; Northwestern University. Posted here with permission. Document is under a Creative Commons license and requires proper attribution and noncommercial use to be shared: [https://creativecommons.org/licenses/by/4.0/].
The COVID States Project: https://covidstates.org/