Coronavirus (COVID-19)

Diagnosis & Tests

Testing is an important way to help reduce the spread of COVID-19.  If you have symptoms of COVID-19, you should get tested so that you can avoid infecting others.

A COVID-19 test is important when:

  • There has been contact with someone who has COVID-19 and
    • 5 days has passed since it happened
    • Workplaces, school, or healthcare sites require screening
    • Travel occurs, before leaving and when arriving home
    • A healthcare professional or public health official asks for it

Types of COVID-19 Tests

Viral tests – This type of test will tell whether a person has an active infection at the time of the test. There are two main types:

  • Laboratory Test
    • Sample can either be a nasal swab or saliva
    • Results usually in 1-3 days
    • Results are reliable for people with and without symptoms
    • No follow-up test required
    • Common example: PCR test
  • Rapid Test
    • Sample is usually a nasal swab
    • Results usually in 15-30 minutes
    • Results may be less reliable for people without symptoms
    • Follow-up test may be required
    • Common example: Antigen test

Antibody test – This blood test may be able to tell if there has been a past COVID-19 infection.  This test may also be called a serology test.”

What Does a Negative Test Result Mean?

If you receive a negative result, that means that the coronavirus that causes COVID-19 was not found in your sample. A negative test does not completely rule out infection.

Last Updated October 2022

Back To Top