Are you convinced you have passed COVID-19 and want to test it? Nothing of that

Recently, the availability of serological tests has significantly increased, which can be used to check in a few minutes whether our body has antibodies that the body produces in response to the SARS-CoV-2 coronavirus infection.

Recent studies, however, show that, as a rule, these tests are of little value.

Depending on the type, serological tests look for antibodies in the blood, such as immunoglobulin M (IgM) or immunoglobulin G (IgG), which the body produces in response to the presence of the coronavirus. If the test detects their presence, it means that the patient has either already had the COVID-19 disease or the disease is ongoing.

I would like to know if I have already had COVID-19

The problem, however, is that the antibodies detected by these tests disappear from the body relatively quickly after the infection is fought. For this reason, the test may show that we do not have or have had COVID-19 before, but may not actually notice that we have had the infection and the disease some time before. This means that by performing a serological test we will not check (for the sake of peace) whether we have already passed the disease and acquired immunity.

I would like to know if I am currently suffering from COVID-19

Here too, the serological test will tell us little. If the first symptoms similar to those commonly associated with coronavirus infection have already appeared … then the test will tell us little. The problem is that the body does not start producing the first antibodies until two weeks after the first symptoms. Therefore, we may find ourselves in a situation where we are just suffering from COVID-19, and the serological test shows that there are no antibodies in the body, so we are safe.

Test producers: who will be the first to get more money from the market

The unprecedented situation in which the entire world of medicine has found itself after the coronavirus attack has caused the entire world of science to roll up its sleeves and intensify efforts to accelerate the development of drugs and vaccines for COVID-19, on the other hand, many companies decided to introduce of sales quickly developed and poorly proven coronavirus tests.

The market demand guaranteed a quick return on invested funds, because whole countries were preparing for the tests. The problem is that there was not enough time to thoroughly check and describe their credibility.

When scientists from the Society for Infectious Diseases in the US checked the tests that appeared on markets around the world, they found that most of them were not properly checked. Out of almost 10,000 scientific articles describing the process of checking the credibility of tests, researchers considered only 47 to be reliable! This means that over 90 percent. The tests currently available in the world do not give virtually any valuable and unambiguous results.

Yet serological tests are of some use

While the tests will not allow us to check whether we have already passed COVID-19 or not, their imprecise results collected during screening may still be sufficient to determine whether the coronavirus is more or less prevalent in a given population than in others. It is worth noting, however, that we are talking only about the absolutely best laboratory serological tests available on the market (ELISA or CLIA).

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Are you convinced that you have passed COVID-19 and want to test it? Nothing of that