Know the differences between home options and laboratory, antibody tests. These issues are covered in this article.
What is the test for?
Most countries open to travel now require a negative test result. Even without symptoms, a person can carry a dangerous virus, which can affect its further spread.
A positive test result early in the disease allows people to isolate themselves, reducing the likelihood of infecting others and allowing them to seek treatment earlier, thus reducing the severity of the disease and its associated risks.
COVID-19 (coronavirus infection) is an infectious disease resulting from the SARS-CoV-2 virus. The characteristic signs of the disease are fever, cough, weakness and body aches, loss of taste and smell, eating disorders. The consequences of the disease can be pneumonia, pneumonia.
Once in the cell, the virus begins to reproduce itself, the cell dies, and the covid moves on.
To confirm the positive status, you need to determine the RNA by polymerase chain reaction - PCR.
What is the principle of the test?
What is the principle of the test?
Principle of action tests are divided into two types: molecular recognition and serological testing. The second type is easier to use (it also includes express tests). It is he who is based on the recognition of antibodies against the virus in human immunity. With serological testing, a positive test can indicate both the presence of the disease at the moment, and the fact that it has already been transferred and antibodies have been developed earlier, but are still in the body.
Who can get tested for COVID-19?
Tests for coronavirus in the laboratory Initially, only adults could be tested, but now it is available for children. The procedure is recommended for all persons with characteristic symptoms, as well as those who have had contact with potentially infected people.
The test for COVID-19 is regularly passed by employees of medical institutions (in particular, in departments and points where there is a high degree of infection), military units, and industrial enterprises. If more than three cases of a disease with suspected coronavirus are detected, testing can be carried out in children's organizations (kindergartens, schools, creative teams, etc.).
What are the tests for coronavirus?
The tests differ in the reagents and the principle of detecting the virus and the time taken for this, the necessary analyzes. A person takes a swab from the nose and oropharynx, or blood from a vein (less often) or a finger (more often). On average, the result can be obtained from 10-15 minutes to 12-48 hours. In large transport hubs (airports, railway stations), the test can be done on the spot.
You can also contact the polyclinic at your place of residence, the nearest sampling point for tests, or purchase an express test designed for home use (it has a fairly high level of accuracy, the kit contains everything you need for the procedure).
How do I prepare for the analysis?
SARS-CoV-2 lives in mucosal epithelial cells. Enough cells are required to identify it. A swab is taken from the nasopharynx or oropharynx, so it is important to exclude in 3-4 hours:
Brushing your teeth.
Taking local medicines.
The procedure is recorded in advance, the whole process in the laboratory does not take more than 20 minutes. Analysis readiness on average per day.
Home tests: how to use them correctly, are they different from laboratory tests?
There are now tests for home use. The procedure identifies fragments of viral proteins in the smear. The study is ready in 20 minutes. No laboratory equipment required for testing.
A person independently takes an analysis from the nose and throat. If the strip has changed color, then viral antigens are present in the body. It is important not to confuse rapid tests with antibody testing. The task of the first is to diagnose the disease at once, the second is to confirm the transferred disease.
Using this method, it is important to make the right fence. The preparation technology is the same: exclude medicines, chewing gum, food, drinks and smoking. According to statistics, home studies reveal no more than 70% of cases.
Many scientists have spoken out about the need to use quick methods: they will identify more infected people and reduce the burden on government laboratories. Medic Rasshodka offers to buy express tests for COVID-19 online with delivery.