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Abbott COVID-19 IgM Antibody Blood Test Granted FDA Emergency Use Authorization

By LabMedica International staff writers
Posted on 13 Oct 2020
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Image: ARCHITECT i2000SR (Photo courtesy of Abbott)
Image: ARCHITECT i2000SR (Photo courtesy of Abbott)
Abbott (Lake Forest, IL, USA) has been granted Emergency Use Authorization (EUA) by the US Food and Drug Administration (FDA) for the company's AdviseDx SARS-CoV-2 IgM (Immunoglobulin M) lab-based serology test for use on the ARCHITECT and Alinity platforms.

Since the start of the pandemic, Abbott has received EUAs for seven tests, including molecular tests, a rapid antigen test and an IgG antibody test. The company first developed an IgG blood test, which often is the antibody that is longer-lasting in the body after infection. The test helps in understanding if someone has recovered from the virus, as well as contact tracing and epidemiological studies. The IgM antibody, in comparison, is most useful for determining a recent infection as these antibodies become undetectable weeks to months following infection. Having this more complete picture of where a patient is in their recovery can help healthcare providers determine if treatment, isolation or follow-up visits are needed.

Similar to its IgG blood test, the IgM test has demonstrated high reliability in both Abbott's research and external virology laboratory studies. Abbott's data demonstrated 99.56% specificity and 95.00% sensitivity for patients tested 15 days after symptom onset. The IgM test is now available on the company’s ARCHITECT and Alinity platforms.

"Abbott has developed tests to detect the virus at each stage of infection so doctors and their patients are equipped with knowledge of how they are responding to the virus and progressing through recovery," said Robert B. Ford, president and chief executive officer, Abbott. "Antibody tests will continue to play an important role to better understand the virus, the prevalence of COVID-19 in an area and where a patient may be in their recovery."



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