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How it works

Answer a few Questions

Answer a few questions about your health to help an independent physician confirm that an antibody test is right for you.

Order Your Test

Get started by ordering your COVID-19 Antibody Test and we will mail you a Sample Collection Kit. The kit usually arrives within 2 business days.

Collect Blood Sample

Register your unique sample ID using the barcode so we know who you are and follow the blood sample collection instructions included in the kit or on our website.

Get Results

Return your blood sample with included return mailer. Your blood will be analyzed in a CLIA certified lab. We will email you when your results are ready. 

What are antibody tests and why get tested?

Most frequent questions and answers

What are antibodies?

Antibodies play a critical role in the immune system’s defense against infection and disease. An antibody is a unique protein produced by the body’s immune system that recognizes and inactivates unique pathogens, such as viruses. Antibodies bind to the surface of viruses and stop them from entering cells or mark them for destruction by other members of the immune system. The VidaCheck COVID-19 Antibody Test detects a specific class of antibodies called IgGs, which are an immune response of the body and are typically produced about 7 to 14 days after coming in contact with a specific pathogen. The immune system typically continues to produce these antibodies for months to years after someone has been infected, creating a level of immunity to the pathogen.

Why and when should I get tested for antibodies?

Individuals cannot definitively know whether they were exposed to the SARS-CoV-2 virus (the pathogen that causes COVID-19) unless they receive a nasal/throat swab test for COVID-19, while they are sick, confirming the presence of the virus. This is especially relevant for individuals who suspect they were sick but were never tested, or even those with very mild or asymptomatic cases. Antibody tests are critical to understanding how widespread COVID-19 has been in a community. All individuals can be tested, regardless of prior COVID-19 status, so long as symptoms have subsided, to learn if they have been exposed to the virus.  You can be tested with this test throughout the year to see if you have been exposed to the virus, or if you have developed antibodies since your last test.

How do antibody tests work?

VidaCheck uses an ELISA (enzyme-linked immunosorbent assay) produced by Quansys Biosciences to detect SARS-CoV-2 antibodies. A SARS-CoV-2 protein is bound to the bottom of a plastic plate and blood from an individual is added to the plate. If the blood contains SARS-CoV-2 antibodies, those antibodies will stick to the protein that was bound to the bottom of the plate and a chemical reaction will take place that facilitates the detection of those antibodies.

How accurate are COVID-19 antibody tests?

Quansys Biosciences, VidaCheck’s partner, has extensive experience developing antibody tests, like the COVID-19 antibody test, to aid in infectious disease (e.g. Malaria, HIV, and Hepatitis) research. The validation of the COVID-19 test demonstrated accuracy greater than 99%. This level of specificity means you can have confidence in the results. We are excited to be a part of the solution as we work to overcome the effects of COVID-19.

What does a positive or negative test result mean?

A positive antibody test for COVID-19 (the type of test VidaCheck offers) is indicative of a past infection with SARS-CoV-2, the virus that causes COVID-19. Our antibody test informs you if you had been exposed to the virus in the recent past. However, due to the nature of antibody tests, a positive result may be due to past or present infection with non-SARS-CoV-2 coronavirus strains, such as coronavirus HKU1, NL63, OC43, or 229E.

Negative results do not rule out past or present SARS-CoV-2 infection, particularly in those who have been in contact with the virus. Follow-up testing with a molecular diagnostic should be considered to rule out infection in these individuals.

Results from antibody testing should not be used as the sole basis to diagnose or exclude SARS-CoV-2 infection or to inform infection status

How long before I see my results?

You should receive your results within two business days after VidaCheck receives your sample. You can track the status of your sample within your online VidaCheck account.

Why should I use a VidaCheck antibody test over the other tests?

The VidaCheck antibody test is different from rapid antibody tests which have been reported in the news to have underperformed expectations of accuracy. The antibody test developed by Quansys Biosciences is built differently and requires highly trained laboratory personnel to perform the analysis. The test utilizes ELISA technology that has been used and trusted for years for its reliability in aiding researchers, universities, and government agencies perform extensive surveillance studies of entire societies.

How do you collect my blood sample?

When you order your COVID-19 Antibody Test, VidaCheck will mail you a COVID-19 Antibody Test Sample Collection Kit. The sample collection kit contains everything you need to collect a small blood sample from the tip of your finger. After you have collected your blood sample, you will mail it back to us in the prepaid return mailer included with your kit.