Interpreting a covid-19 test result

Discussion
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  • Interpreting the result of a test for covid-19 depends on two things: the accuracy of the test, and the pre-test probability or estimated risk of disease before testing
  • A positive RT-PCR test for covid-19 test has more weight than a negative test because of the test’s high specificity but moderate sensitivity
  • A single negative covid-19 test should not be used as a rule-out in patients with strongly suggestive symptoms
  • Clinicians should share information with patients about the accuracy of covid-19 tests

https://www.bmj.com/content/369/bmj.m1808

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Thank you for sharing the paper, coming on time. With less information on validation of many tests it very challenging the introduction of the test at country level and manly the selection process.
Best