How do you know if you already had Coronavirus disease - what is an antigen and an antibody? - HTI CENTERS

In the era of Coronavirus pandemic, you probably often hear the words "antigen" and "antibody"; however, many people may not have accurate information about these conditions. The article will also talk about methods for diagnosing coronavirus.

From today you have the opportunity to conduct a rapid antibody-based test at the I-Lab Laboratory in Tbilisi, which is the official partner of the Acibadem Laboratory (the largest Turkish clinic network) in Georgia.

Contact i-Lab to find out if you already had Coronavirus disease.Make the correct diagnosis - get reliable and accurate test result (sensitivity 95%, specificity 98%).

Methods of diagnosing coronavirus

Three types of laboratory methods are provided for the diagnosis of coronavirus:

Molecular diagnostics, same as PCR;
Rapid antigen-based test;
Rapid antibody-based test.

PCR test

The molecular testing method based on PCR technology is called the gold standard for diagnosing respiratory viruses because it allows us to detect the virus at a very early stage.

When the result is positive, it can most likely be said that a person has this infection.

Quick tests

There are 2 types of quick test.

One is a rapid test based on antibodies. During this laboratory test we look for 2 types of antibodies and these are - immunoglobulin G and M.

If immunoglobulin M has been identified, it means that the virus is in a severe, acute phase. In coronavirus, immunoglobulin M usually appears on the 5th or 7th day of infection.

And if the test result showed immunoglobulin G it means that the person has contracted the infection.

There is another type of rapid test known as the antigen-based rapid test. Like PCR, an antigen test detects the virus in an active phase.

What is an antibody?

An antibody is also known as a protein of immunoglobulin nature and is produced in response to the introduction of an antigen into the body.

Antibody synthesis is produced by B-lymphocytes.

An antibody is a protective protein produced by the immune system.

When a foreign substance, or antigen, enters the body, the immune system produces antibodies against it to protect the body.

What is an antigen?

An antigen is a substance foreign to the body, usually a protein or protein complex, in response to which specific antibodies are produced in the body.

An antigen is any substance, a substance that stimulates the immune system to produce antibodies against it.

Any foreign pathogenesis (bacteria and virus), chemicals, toxins, pollen or other, is an antigen for the body.

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