Jakarta, CNBC Indonesia - One of the tests that is widely used to determine the presence of the Covid virus in the body is the antigen swab.Antigen test is an immunity test that aims to detect the presence of an antigen from a virus which indicates an infection with that virus at that time.In addition to the antigen swab test, there are two types of medical procedures that can be used to identify Covid-19 disease, namely rapid antibody tests and PCR.To do this test, you don't have to feel certain symptoms to be able to undergo an antigen test.Not only at home, recently there is also an antigen test that can be done independently.As for how the antigen swab works, it is done by inserting or plugging a device into the inside of the nose to the throat or nasopharynx to take a sample of mucus.The sample is then tested using a similar tool such as a rapid test to see the results.After that in a few minutes the results will come out.The self-antigen swab test has an accuracy of up to 92%, because this swab test looks for antigens from the virus.For perfect accuracy, we recommend buying 2 test kits to be repeated 5-7 days after the first test.The unit antigen test consists of several features, such as:To take a sample, you'll need to insert a device that resembles a long cotton swab into the inside of your nose and push it up into the nasopharynx, which is the upper part of your throat that is behind your nose and behind the roof of your mouth.Then, the swab device is rotated for about 15 seconds so that the mucus sample can be taken properly.However, it is important to note that rapid antigen tests that are not carried out by medical personnel can lead to errors in sampling.So, it could be a positive result even a negative end, and vice versa.Mistakes in doing the swab can be fatal.Because the vagal or vagus is a part of the nerve that is located in the neck.These nerves are closely related to the digestive tract, respiratory system, and heart.When this nerve is compressed it can cause vagal reflexes such as coughing, vomiting, fainting, and even death.