COVID-19- Antibody Test (IgG),

Antibody Testing

Antibody blood tests, also called antibody tests, check your blood by looking for antibodies, which show if you had a previous infection with the virus. Depending on when someone was infected and the timing of the test, the test may not find antibodies in someone with a current COVID-19 infection. Antibodies are proteins that help fight off infections. Antibody tests should not be used as the only way to diagnose someone as being currently sick with COVID-19.

(Source CDC)

 


SARS-CoV-2 Serology (COVID-19) Antibody (IgG), Immunoassay - Detection IgG antibodies may indicate exposure to SARS-CoV-2 (COVID-19).

Typically it  takes at least 10 days after symptom onset for IgG to reach detectable levels.

Kindly note that an IgG positive result may suggest an immune response to a primary infection with SARS-CoV-2, but the relationship between IgG positivity and immunity to SARS-CoV-2 has not yet been firmly established.

 


This Test is not recommended for anyone with an active COVID-19 infection and if you have the following symptoms.

 

  •  Fever higher than 100.5 °F in the last 3 days? 

  • Any of the following new onset symptoms of COVID-19 in the last 10 days?

    • Loss of smell or taste
    • Shortness of breath or difficulty breathing
    • Feeling weak or lethargic
    • Lightheadedness or dizziness
    • Vomiting or diarrhea
    • Slurred speech
    • Seizures

     

  • Have you been exposed to anyone with known COVID-19 infection in the last 14 days?


Please see CDC recomendations below:

  • If you test positive:
    • A positive test result shows you have antibodies that likely resulted from an infection with SARS-CoV-2, or possibly a related coronavirus.
    • It’s unclear if those antibodies can provide protection (immunity) against getting infected again. This means that we do not know at this time if antibodies make you immune to the virus.
    • If you have no symptoms, you likely do not have an active infection and no additional follow-up is needed.
    • If you have symptoms and meet other guidelines for testing, you would need another type of test called a nucleic acid test, or viral test. This test uses respiratory samples, such as a swab from inside your nose, to confirm COVID-19. An antibody test alone cannot tell if you definitely have COVID-19.
    • It’s possible you might test positive for antibodies and you might not have or have ever had symptoms of COVID-19. This is known as having an asymptomatic infection, or an infection without symptoms.
  • If you test negative:
    • If you test negative for COVID-19 antibodies, you probably did not have a previous infection that has gotten better. However, you could have a current infection. It’s possible you could still get sick if you have been exposed to the virus recently, since antibodies don’t show up for 1 to 3 weeks after infection. This means you could still spread the virus.
    • Some people may take even longer to develop antibodies, and some people may not develop antibodies.
    • If you have symptoms and meet other guidelines for testing, you would need another type of test called a nucleic acid test. This test uses respiratory samples, such as a swab from inside your nose, to confirm COVID-19. An antibody test alone cannot tell if you definitely have COVID-19.
  • These test results alone do not confirm if you are able to spread the virus that causes COVID-19. Know how to protect yourself and others.


COVID-19- Antibody Test  (IgG),
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  • Item #: QNATTRD-XER39504
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