About Our COVID-19 Antibody Test
Learn more about our antibody test, the science behind it and the accuracy of our test
Our Antibody Test
We offer COVID-19 antibody testing using globally certified AFIA diagnostic machines from a South Korean biotech company. Many sources cite South Korea as being the country that has tackled the pandemic most effectively thus far.
Our IVD medical devices are TUV certified and CE marked.
The test analyses the number of antibodies found in your blood, specifically IgM and IgG. The results show whether your immune system has produced these antibodies in response to having been exposed to and successfully recovered from the virus.
Accuracy of Our COVID-19 Test
The sensitivity is: 100%
The specificity is: 97.8%
Overall accuracy: 98%
Our test has 100% positive percent agreement with PHE approved Abbott Architect IgG method. You can see the validation study here.
This level of accuracy is achieved through the use of high sensitivity Automated Immune Fluorescence Assay (AFIA) machines that are used to analyse and produce each result.
The results from our test go beyond just a simple positive (+) or negative (-) answer. Our AFIA machines will give you a Cut-Off Index (COI) value for your IgM and IgG antibodies.
The Science Behind Our COVID-19 Test
- Immunoglobulins (antibodies) are produced by B-cells (a type of white blood cell) in response to the infection of the pathogen, such as SARS-CoV-2.
- Immunoglobulins bind to specific antigens on the pathogen, to ‘flag’ the pathogen as foreign.
- A secondary immune response is triggered to attack and remove the pathogen.
In the case of COVID-19, as symptoms begin to appear, immunoglobulin M (IgM) rises in the blood to detectable levels, 5 to 7 days after infection.
Immunoglobulin G (IgG) is produced to bind to specific markers on the pathogen. Its levels typically rise after 7 days and remain detectable for some time.
When To Get Tested For COVID-19
The COVID-19 antibody test becomes more useful over time. It takes a few days for the body to start producing antibodies. That's why we recommend taking the antibody test 14+ days after the onset of symptoms.
By comparison, the detection rate for the PCR swab test decreases over time. This makes it a less useful tool for understanding if you have had the virus, if you wait too long to get tested.
If you are worried that you might still be infectious, it is advised that you take both the PCR swab test and the antibody test to confirm your results.