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GTR Home > > COVID 19 Antibodies for IgG, IgA, and IgM - KSL Chemiluminescence Assay

Interpretation

Sample Negative Report

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Sample Positive Report

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Comments about the test interpretation (e.g. clinical implication of test results)

Positive results to antibodies against SARS-CoV-2 are generally indicative of an individual’s current or prior infection with the SARS-Cov-2 virus. However, the duration of these antibodies remaining in circulation has not yet been established. These test results should always be considered in the context of a patient’s clinical history, physical examination, epidemiologic exposures, and vaccination history before making the final diagnosis. IgM isotype antibodies develop within 5 to 7 days indicating recent exposure to the virus. IgG isotype antibodies develop after 10 days and remain in circulation longer. It may indicate past exposure or vaccine mediated immune response. IgA isotype antibody development is variable in its response and may indicate past exposure or vaccine-mediated immune response.

Research

Is research allowed on the sample after clinical testing is complete?Help
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Clinical resources

Practice guidelines

  • NICE, 2024
    UK NICE Guideline NG191, COVID-19 rapid guideline: managing COVID-19, 2024

Consumer resources

IMPORTANT NOTE: NIH does not independently verify information submitted to the GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in the GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.