Covid-19 testing has received a lot of coverage in the news....The first and foremost focus is on increasing access to testing so that people who are currently suffering from the disease can be diagnosed....but now other tests are also being used....an antibody test that shows symptoms of the disease in people in the past has become available....you can go for the smart coronavirus detection capability test....to detect definitively, corona testing services in GCORP LLC is available for Tehran.

Below is a quick guide to identifying the pros and cons of each type of test.

Infectious detection test (PCR or PCR)

Use of PCR:

Doctors use the PCR test to diagnose people who are currently infected with Covid-19... We have heard a lot about this test.

See more: Book an appointment with an infectious disease doctor online

PCR method:

This test uses a mucus sample that is usually taken from a person's nose or throat... Maybe this test will also work on oral saliva... In this test, the genetic material of the corona virus is checked, and to perform it, PCR (Polymerase Chain Reaction) technology is used, which shows the genetic material well if there is genetic material... When the virus is present in the person's body, these materials can be identified.

PCR accuracy rate:

In general, it can be said that this method is the most reliable.... But the virus may multiply in the throat and nose after a few days, so testing on a person who has recently contracted the disease does not work, and sometimes the symptoms of an active infection are not clear.

PCR test speed:

Usually the sample is sent to a central laboratory for analysis, so it takes a few days to get the results.... At the beginning of the epidemic, the waiting time to get the results was longer due to the large number of orders.

Antibody test (blood test or serology)

Use of antibody:

The antibody test is used on people who have already been infected with the virus....the test does not determine if the person is already sick....the advantage of this method is to track the spread of the virus in the population.

How to do antibody:

An antibody test is a blood test that looks for antibodies to the corona virus.. The body produces antibodies in response to an infectious agent such as a virus.. Antibodies are usually produced in the body within four days to more than a week after the infection occurs, so this method is not used to diagnose the current disease.

Antibody accuracy:

There are more than 120 antibody tests in the world... In general, citing the answer of this type of test is not very reliable.... Researchers say: Even if you are sure of the presence of antibodies to the corona virus in the body, we still do not know whether the antibody prevents you from getting this disease again... However, this test provides good information about disease rates in societies where errors in individual test results have little effect.

Antibody test speed:

The answer to this test based on a drop of blood taken from the finger is ready within a few minutes.

Antigen test

* This test is less available in Iran.

Use of antigen:

This test shows people who are currently infected with the corona virus.... It is used as an immediate test to detect active infection.... First of all, we do not use this test to diagnose the disease, but it is used to monitor people in order to reach a more definitive result.

See more: Online Internist Booking

How to make antigen:

The antigen test shows the presence of the virus in the pharynx and nasal secretions.... In this method (unlike the infectious diagnosis test that shows the genetic material of the virus), we look for the proteins of the virus.

Antigen accuracy rate:

Researchers do not expect this method to be as accurate as an infectious diagnosis test, but antigen testing can be used to diagnose an infection in a patient.

Antigen test speed:

As a result, this test is prepared in a few minutes.... As a result, it is used to diagnose the condition of people in the hospital, workplace and other cases where the immediate diagnosis of the possibility of disease outbreak is very important.... But until the high accuracy of this type of test is proven, doctors should also receive a positive infectious diagnosis test to ensure the diagnosis.