COVID-19 TESTING IMPACT CALCULATOR

The results assume that 100% of an organization’s population is tested prior to initiating a screening protocol.

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The COVID-19 Testing Impact Calculator:

  • Provides education and guidance for asymptomatic screening of an organization.
  • Helps determine the testing frequency needed to identify and isolate potentially contagious people.
  • The results assume that 100% of an organization’s population is tested prior to initiating a screening protocol.
  • Does NOT ensure that COVID-19 will be kept out of your organization.
  • Does NOT replace the need for other mitigation efforts such as increased social distancing, increased ventilation, and appropriate hygiene practices.
  • The Calculator is subject to the disclaimers set forth on the site and the End User License Agreement. 

Calculations

The COVID-19 Testing Impact Calculator uses the following default assumptions for all calculations:

  • The number of days a person is contagious is 10.
  • The percentage of the US population that develops COVID-19 symptoms after becoming infected is 50%.
  • The maximum number of days between testing is 21.
  • The time an individual must wait to be sampled is 15 minutes.
  • Assumes the prevalence of COVID-19 within an organization is no greater than that of the broader community.

Test Groups

The COVID-19 Testing Impact Calculator uses the following assumptions for test groups:

  • The default assumptions do not represent any one individual test.
  • Tests used for asymptomatic screening are currently used off-label and under practitioner guidance.
  • Due to limited data for asymptomatic screening, the default settings chosen for each test group is a conservative estimate based upon consultation with industry experts. 

Understanding Test Sensitivity & Test Specificity

  • Tests with lower sensitivity may result in more false negatives, meaning the test is more likely to miss a true infection by producing a negative test result in people who are actually infected with COVID-19.
  • Tests with lower specificity may result in more false positives, meaning if you receive a positive result, it indicates that you are likely to be infected with COVID-19, particularly if you are tested during the first week of infection and are symptomatic.

Recommendations: 

  • If you receive a negative test result but are symptomatic, then consider quarantining and obtain a confirmatory test.
  • If you receive a positive result you are likely to be infected with COVID-19 if you are symptomatic.  
  • If you receive a positive result when using a test with specificity below 99% and are not symptomatic (asymptomatic), the likelihood of false positives exists. You should consider a confirmatory molecular PCR test. 

 

Changing your mitigation strategies may change your numbers. Explore how better approaches lead to better outcomes.

End User License Agreement

Before accessing the COVID-19 Testing Impact Calculator, please read its End User License Agreement found here.  By clicking “I accept” below or otherwise accessing the COVID-19 Testing Impact Calculator, you accept and agree to be bound and abide by such End User License Agreement.