What are antibodies?
After you have had a virus, your body will make antibodies for that specific virus. This is also the case with the Covid-19 virus. After you have been infected with the coronavirus, your immune system starts making substances to recognise the virus so they can fight against it the next time you get infected. These substances are the antibodies!
These antibodies will work against the virus the next time you are infected. Because the antibodies recognise the virus and start binding to the outside of the virus, they ensure that the virus can no longer enter other body cells. This stops the infection and your body can start producing more antibodies and destroy the virus.
How does the antibody test work?
The antibody test works as follows. Using a small blood sample from the finger, the blood is tested for IgG and IgM antibodies. IgM are the antibodies that are often produced at the beginning of the infection and IgG when larger quantities are being produced or when the body gets in contact with the virus for the second time. If these antibodies are found in the blood, the test will therefore indicate that you/your patient has had corona.
In the case of a long-term infection, the test can sometimes also indicate that a person has corona at that moment. However, this is not guaranteed and the test is not suitable for this because the body often only produces antibodies two or three weeks after the infection. Would you like to test at home whether you have corona? Then, instead of the antibody test, you should buy an antigen self-test.
What are antibody tests used for?
As indicated above, antibody tests are not suitable to use as a self-test to check whether you have corona. On the contrary, antibody tests should only be carried out by professionals, which is why only companies or healthcare professionals can order them.
The serological tests are currently mainly used by laboratories for population screening. By administering these tests to the Dutch population, the RIVM gains insight into people's resistance to the coronavirus. The tests are also used in hospitals in exceptional situations, for example if someone remains infected for longer than average or suddenly develops serious symptoms when already being infected.
Is the antibody test reliable?
The certified antibody tests are very reliable. At Nobraa we only sell the Lepu Medical Serological Rapid Test, which has the required CE mark and meets the requirements of the EU IVD (In-Vitro Diagnostics) Directive (98/79/EC). This test is therefore very reliable, specifically for 99.3%!
There are only a few situations in which the antibody test is not suitable and therefore the result may not be correct. If you just recovered from the virus or if you are still infected, it is possible that the body has not made any antibodies yet. It is therefore not a suitable test for testing whether you have the coronavirus at that moment. It is also possible that people who have not been ill from the virus or who have only had slight symptoms, have not made enough antibodies to show this in an antibody test.
Buy antibody tests online
At Nobraa we like to operate as a medical wholesaler. We therefore sell all medical articles, including antibody tests, in large quantities. So, are you a healthcare professional or company that needs dozens or maybe even hundreds of antibody tests?
Then you have come to the right place! The Lepu Medical Serological Rapid Tests are sold per box of 20 and we make sure that we always have them in stock. So you will never be short of medical supplies.