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More than 100 COVID-19 vaccines are in some stage of development, but most experts project it will be 2021 before a vaccine is ready to roll out to the public. As the coronavirus rages on, researchers are also focusing their attention on understanding who has had the virus, to help manage the spread and better prepare communities as economies reopen. A key component to that is COVID-19 antibody testing, also called a serology test.

The antibody test — a simple blood draw — does not diagnose active coronavirus infections, but it does let a person know if they have been infected with the virus in the past. Even people who never had symptoms could have had the coronavirus. The serology test shows that by detecting the antibodies, or specific proteins, the body makes in response to the virus when it enters the body. If the test does find those proteins in the blood, it could mean that person has some level of immunity to the virus in the future. Although the CDC does not know conclusively if the antibodies will prevent a person from getting reinfected, antibodies, by nature, are the body’s immune response to an infection. That scientific fact, along with a desire to know how the pandemic is impacting the population — and what groups might be more or less vulnerable — has led to widespread antibody testing by everyone from state and local governments to employers and individuals.

Any Lab Test Now is providing the COVID-19 antibody test by appointment in-clinic or on-site at a workplace when contracted by an employer. Three different antibody tests are offered: IgG, IgG/IgM, and IgG/IgM/IgA.

Let’s break down what all those letters mean.

IgG Antibody Test:

This test detects IgG antibodies that develop in most patients within seven to 10 days after symptoms of COVID-19 begin. IgG antibodies remain in the blood after an infection has passed. These antibodies indicate that you may have had COVID-19 in the recent past and have developed antibodies that may protect you from future infection. It is unknown at this point how much protection antibodies might provide against re-infection.

IgM Antibody Test:

This test detects IgM antibodies. IgM is usually the first antibody produced by the immune system when a virus attacks. A positive IgM test indicates that you may have been infected and that your immune system has started responding to the virus. When IgM is detected you may still be infected, or you may have recently recovered from a COVID-19 infection.

ALTN offers a combination test for the IgM and IgG COVID antibodies, which provides the status of both recent/current infection and past viral exposure.

IgA Antibody Test:

IgA antibodies are primarily found in high concentrations in the mucous membranes. IgA provides protection against infection in mucosal areas of the body such as the respiratory tract (sinus and lungs) and the gastrointestinal tract (stomach and intestines). The IgA antibody can also be detected if you have active or recent exposure to the virus, as is seen with the IgM antibody.

People should be asymptomatic for at least seven days prior to taking an antibody test, and it will take one to three days to get results back. The cost may be covered by your insurance plan or the government, so check with your healthcare provider.


A positive test result indicates it is likely you have had COVID-19 and may have developed an immune response to the virus.

A negative test result means no antibodies to the virus were found in the blood and you did not have COVID-19, Although it is possible, if there is an active infection, the body has not had time to produce antibodies yet.

False positives (specificity) and false negatives (sensitivity) are possible with the tests, but rapid advancements have allowed us to offer lab tests that are 99-100 percent accurate.

Any Lab Test Now only works with labs whose tests have received Emergency Use Authorization (EUA) from the FDA, and are CLIA (Clinical Laboratory Improvement Amendments) certified, and CAP (College of American Pathologists) accredited. These criteria ensure that test results meet and exceed industry standards for clinical laboratory testing.

In this uncertain time, when there are many more questions than answers, Any Lab Test Now wants to put you at ease and provide you all the tools you need to manage your healthcare. We are here to help.