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Everything you need to know about COVID-19 testing

COVID-19 testing is crucial to identifying whether you have the virus, allowing you to seek treatment and prevent transmission. Here's a simplified guide to the types of tests available and when to use them.

Types of Tests

Nucleic Acid Amplification Tests (NAATs)

  • Description: NAATs, including PCR tests, are highly sensitive and considered the “gold standard” for detecting COVID-19.
  • Processing: Samples are collected by a healthcare provider and analyzed in a laboratory. Results usually take up to 3 days.
  • Precision: Highly reliable for detecting the virus.

Antigen Tests

  • Description: These rapid tests provide results in 15-30 minutes.
  • Processing: They are less sensitive than NAATs, especially in asymptomatic cases. A single negative result does not rule out infection.
  • FDA Recommendations: For best accuracy, perform 2 negative tests if you have symptoms or 3 if you don't have symptoms, spaced 48 hours apart. NAATs can confirm antigen test results.

Self-Tests

  • Description: At-home antigen tests offer convenience and can be used without visiting a testing site.
  • Processing: Carefully follow package directions for accurate results.

When to Get Tested

If you have not had COVID-19 or a positive test in the past 90 days:

  • Choose between a NAAT test or an antigen test. If an antigen test is negative, consider repeat testing according to FDA guidelines.

If you tested positive in the last 90 days:

  • Positive in the last 30 days:
  • With symptoms: Use an antigen test and follow FDA recommendations for repeat testing.
  • Without symptoms: Additional testing is generally not recommended.
  • Positive 31-90 days ago:
  • With symptoms: Use an antigen test and follow FDA recommendations for repeat testing.
  • no symptoms: Use an antigen test with repeat testing as advised by the FDA.

Important notes

  • Positive results may persist for up to 90 days, even after recovery.
  • Reinfections are possible within this period, which may complicate the interpretation of positive results.
  • Consult a healthcare provider if you have questions about the tests or results.

By understanding these testing options and guidelines, you can make informed decisions about how to manage your health and minimize the spread of COVID-19.

Source: Testing for COVID-19

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