Friday, October 30

Rapid antigen tests: knowing in detail what they are – Social Futuro

With the arrival of COVID-19, everyone’s routines have completely changed. But what happens when the disease is transmitted? It must be detected early in order to keep the close circles of the affected person informed. Rapid antigen tests can be an essential measure to detect whether the person has the virus or not. Rapid antigen tests These tests are methods of diagnosing the presence of antigens in the cells of an infected person. Most tests give results quickly, as they only need about 30 minutes to throw them. Thus, it is not surprising that they are used at the entrance of hospitals or simply to check in emergency situations whether or not a person has COVID-19. This COVID-19 test works in a very different way from the already known PCR. Antigen testing detects a protein that belongs to the same virus. However, to detect this protein and for the test to be positive, it must be present in sufficient quantity. Typically, a sample is taken from the patient, either from the mouth, nose, or sputum, and treated aseptically so that it can be fed into a machine. This machine will detect if there is such a protein or not. The limitation of this type of test is that it is less sensitive than the PCR test performed to detect the virus. The fact that it is less sensitive means that it is less likely to detect people who are sick. However, its sensitivity is 93.3%, so it can be considered high. On the other hand, it should be noted that its specificity, the ability to detect non-sick people, is 99.4%. In a way, it is a test that returns few false positives. Of course, it should be noted that these figures may vary slightly depending on the manufacturer. What other tests exist to detect COVID-19? The PCR test is one of the most reliable tests. It is intended to directly detect viral RNA, so it can give more than reliable positives. Contrary to what many people think, this test cannot confuse COVID-19 with other viruses. The RNA chain of this virus is very different from that of others, even the flu, and above all it is unique. Serological tests also need to be added. These are not intended to detect the virus in the body, but there is the presence of antibodies. Antibodies are molecules that the body itself generates to fight disease. Each antibody is synthesized in a specific way to fight against a specific virus. Thus, the antibodies against COVID-19 will be synthesized only to deal with this virus. So, this type of test aims to detect those specific antibodies, which are generated in case of infection. In conclusion, rapid antigen tests have many advantages, although they are less reliable than other tests. It is also important to prevent contagion with appropriate materials and social distance. You are encouraged to learn more about the coronavirus test at

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