The @CDCgov put out their interim guidelines for SARS-CoV-2 antigen testing and the document is exemplary - clear, concise, and with a lot of relevant information.
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on other useful documents for e.g., workplace and university testing 
https://www.cdc.gov/coronavirus/2019-ncov/lab/resources/antigen-tests-guidelines.html
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https://www.cdc.gov/coronavirus/2019-ncov/lab/resources/antigen-tests-guidelines.html
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General overview of different ways of testing for COVID-19.
https://www.cdc.gov/coronavirus/2019-ncov/hcp/testing-overview.html
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https://www.cdc.gov/coronavirus/2019-ncov/hcp/testing-overview.html
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FAQ from CDC on how to interpret testing results (as well as other FAQs).
https://www.cdc.gov/coronavirus/2019-ncov/lab/faqs.html#Interpreting-Results-of-Diagnostic-Tests
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https://www.cdc.gov/coronavirus/2019-ncov/lab/faqs.html#Interpreting-Results-of-Diagnostic-Tests
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FAQ from FDA on COVID-19 testing - including a very important and concise summary of "diagnostics", "screening", and "surveillance" (yes, there are multiple reasons why one might test - and one type of test does not fit all).
https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/covid-19-test-uses-faqs-testing-sars-cov-2
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https://www.fda.gov/medical-devices/coronavirus-covid-19-and-medical-devices/covid-19-test-uses-faqs-testing-sars-cov-2
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If your workplace has the ability to run a COVID-19 test, did you know that you are allowed to create a surveillance program with individual reporting of presumptive positives *without* having a CLIA lab? Yup, it's possible.
https://www.cms.gov/files/document/clia-university-lab-testing.pdf
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https://www.cms.gov/files/document/clia-university-lab-testing.pdf
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If you're considering a COVID-19 surveillance and mitigation program, here's helpful language from the EEOC permitting employers to test for SARS-CoV-2 (but not antibodies), mandate masks, perform temperature checks, etc.
https://www.eeoc.gov/wysk/what-you-should-know-about-covid-19-and-ada-rehabilitation-act-and-other-eeo-laws
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https://www.eeoc.gov/wysk/what-you-should-know-about-covid-19-and-ada-rehabilitation-act-and-other-eeo-laws
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This is a little tangential, but if you're a university, research institution, hospital, etc. considering a COVID-19 surveillance program, think about setting up a Quality Improvement (QA/QI) project, instead of going with a Human Subjects study.
http://www.irb.emory.edu/forms/review/QI.html
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http://www.irb.emory.edu/forms/review/QI.html
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