Close Contact Not a Close Contact

POSITIVE NEGATIVE POSITIVE NEGATIVE POSITIVE NEGATIVE POSITIVE NEGATIVE

ASYMPTOMATICSYMPTOMATIC

Close Contact Not a Close Contact

Perform con�rmatory testing withPCR

Perform con�rmatorytesting with PCR

Isolate until PCR resultsavailable.

Quarantine for 14 days.

No con�rmatory test needed

No con�rmatory test needed

Isolate 10 days fever-free without fever reducing medications and symptoms improved or 10 days from date positive test was taken.

Isolate for 10 days fever-free without fever reducing medications and symptom improvement.

Isolate until PCR results available.

Continue to quarantine for 14 days. Monitor symptoms.

Considered true negative

If symptoms develop, get retested.

No con�rmatory test needed

Perform con�rmatory testing withPCR

Isolate until PCR results. If PCR negative then can stop isolation.

No isolation needed

COVID-19 ANTIGEN TESTING

Isolate for 10 days from date positive test was taken.

Antigen tests detect the presence of a speci�c viral antigen, which suggests a current viral infection. An antigen spurs the immune system to produce antibodies, which attach to antigens. This either helps the body destroy the antigens or makes them harmless. The test analyzes a �uid sample, collected from a nasal or throat swab. Antigen tests are relatively inexpensive and can be used at the point-of-care (POC). The currently authorized devices return results in approximately 15 minutes and are most e�ective when used to test people with symptoms of COVID-19 within seven days of syptom onset. Please refer to the chart below to interpret antigen testing results.

Revised: 10-28-2020

†

Most likely*

Most likely*

‡ ‡likely *

likely *

‡

Most likely*

Most likely*

likely*

likely*

*No test is ever perfect. All tests occasionally result in false positive results (the test result should be negative because you DO NOT have COVID-19 but comes back positive) or false negative results (the test result should be positive because you DO have COVID-19, but comes back negative). Sometimes the results are not de�nitive (the result is unclear, and you don’t know if it is positive or negative). For this and other reasons, results should always be reviewed by a healthcare professional. † Viral tests are typically performed on respiratory specimens such as nasal swabs or throat swabs. They test for the presence of the virus, usually by testing for the virus’s RNA or sometimes by testing for the virus’s proteins (“antigen testing”). Antigen testing may be less sensitive than tests for the virus’s RNA. If your antigen test is negative, please ask your healthcare provider if additional testing with an RNA test is needed and how long you should stay home. ‡ Antibody testing, also called “serologic testing” or “serology”, is typically performed on a blood sample. Ideally, the results show whether you have ever been infected with the virus in the past or may be currently infected. Antibody tests check for antibodies that appear in the blood between about one and three weeks after symptom onset and may remain as long as a lifetime. Antibody tests may be positive while a person is infected. It is not yet known whether these antibodies protect against reinfection with the COVID-19 virus. For many other similar viruses, antibodies are protective for years or longer, but we do not yet have adequate data to know for COVID-19.

you don’t have

https://www.coronavirus.in.gov/