If indicated, a repeat test may yield more reliable results. The most common reasons for equivocal results are presence of an immune response but unclear if against the infection being tested for (COVID-19 in this case) or similar infections (the common cold is a type of coronavirus). If you had symptoms consistent with COVID-19 within the past 3 weeks and tested negative, repeat testing in 1-2 weeks may yield a positive result.Įquivocal: Your test results could not be interpreted as Positive or Negative. Please note, it may take 14-21 days to produce detectable levels of IgG following infection. CAN I GET THE TEST IF I PREVIOUSLY WAS INFECTED WITH COVID-19 While the Spike protein specific antibodies will most likely show a level of immune response, a more appropriate antibody test would include other parts of the virus. This means you have not been infected with COVID-19. The test can use many names for the Spike protein, including S1/S2, RBD-protein, and others. Negative: You tested negative for COVID-19 IgG antibody. In contrast, the Beckman spike IgG antibody signal peaked between 14 and 28 days post positive SARS-CoV-2 PCR and steadily declined in subsequent samples. For patients testing higher then 2,500 U/mL, your results will be reported as “Greater Than 2,500 U/mL." Please note: A numerical value will be reported up to 2,500 U/mL. Abbotts quantitative IgG antibody test is designed to detect levels of IgG antibodies that attach to the virus spike protein on the virus surface in serum and plasma from individuals who are suspected to have had COVID-19, or in serum and plasma of subjects that may have been infected by SARS-CoV-2. Spike (S): Antibodies to the spike proteinare produced after vaccination1-3 Nucleocapsid (N): Antibodies to Nucleocapsididentify individuals who have had a recent or prior COVID-19 infection, but are not useful for detecting antibodies elicited by currently available SARS-CoV-2 vaccines. It is yet undetermined what Antibody level is correlated to immunity against developing the COVID-19 infection A negative result means your immune system has not generated a measurable response to the COVID-19 vaccination and that you have likely not had the COVID-19 infection. < 0.80 U/mL: This is a negative result for anti SARS CoV-2S. The test is not able to differentiate whether the antibodies produced were in response to the vaccine or to a prior infection. It may also mean your body’s immune system has generated a response to a prior COVID-19 infection. A positive result means your body’s immune system has generated a response to the COVID-19 vaccine. >/= 0.80 U/mL: This is a positive result for anti-SARS CoV-2S. Aid in identifying individuals with an adaptive immune response to SARS-CoV-2, indicating recent or prior infection. Your Spike Protein Antibody results will be reported as a reference range: Test Details Use Qualitative and semi-quantitative detection of antibodies to SARS-CoV-2 spike protein receptor binding domain (RBD).
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