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. Please note, it may take 14-21 days to produce detectable levels of IgG following infection. This means you have not been infected with COVID-19. Non-Reactive: You tested negative for COVID-19 IgG antibody. Please continue with universal precautions: social distancing, hand washing and when applicable PPE such as masks or gloves. It is unclear at this time if a positive IgG infers immunity against future COVID-19 infection. Some patients with past infections may not have experienced any symptoms. Reactive: You produced the COVID-19 IgG antibody and have a high likelihood of prior infection. Please note, it may take 14-21 days to produce detectable levels of IgG. A common question is "My result was 1.3, does that mean I produced a little IgG and could be positive?" The answer is no. Some patients with past infections may not have experienced symptoms. ≥ 1.4: This is a positive result and has a high likelihood of prior infection. Sunrise Labs will report your results as: 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. Negative: You tested negative for COVID-19 IgG antibody. Has anyone taken this test and received clarification on immunity or how to understand individual immune response? I am curious if there are others who are immunocomprised who can share their experiences with receiving the vaccine and going through testing such as this.Positive: You produced the COVID-19 IgG antibody and have a high likelihood of prior infection. I read people have been getting two different values/ranges from LabCorp for this test. Is this an acceptable range/number? Low or high? Results previously reported for this assay were 0.8-2500 U/mL with higher values reported as >2500 U/mL. I am not finding much on a baseline or how to interpret the results. Effective March 28, 2022, Labcorp expanded the reporting range of results for test number 164090 SARS-CoV-2 Semi-Quantitative Total Antibody, Spike. I am surprised I produced any response to the vaccine due to having a primary immunodeficiency. Lab draw happened yesterday and the results came back today: 621.7 U/mL PCP is also consulting with infectious disease specialists on antibody results before making an appointment with their office.Ĭuriosity got the best of me so I paid to get the Semi Quant Total from LabCorp. PCP ordered it to find out if I produced a response to the vaccine due to my primary immunodeficiency. I took a IgG antibody test for the spike protein on 6/8/21 which came back positive. I received my second dose of Pfizer on 2/18/21. I do produce immunoglobulin but at deficient levels. 33 year old male diagnosed with common variable immunodeficiency back in 2012.
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