3 types of corona virus tests … what are the most accurate?


Given the different detection methods novel coronavirus Through several tests, questions have surfaced regarding the most accurate of these tests, and how they work.

There are currently two basic types of COVID-19 tests: the diagnostic tests that look for Corona infection Active in mucus or saliva, and blood tests that look for antibodies, are evidence that your immune system has encountered an infection before.

We review 3 types of detection tests here Corona VirusAnd each has its own advantages.

BCR test

This is the most sensitive test for detecting an active infection and its results are so accurate that a healthcare provider collects Mucus From your nose or throat using a specialized swab.

Molecular tests, or PCA, depend on polymerase chain reaction, which is the laboratory technique used to detect the genetic material of the virus, as the US Food and Drug Administration explains.

The response time to detect the virus in people varies from minutes to days or more, depending on whether the sample is analyzed on site or sent to an external laboratory.

The quick test

This type of diagnostic test is often called a “rapid test”, because the response time is much faster than a test RNA. It is also cheaper to produce.

As a result, antigen tests are used to screen large numbers of people, as is the case at airports, according to a recent article in the journal Nature.

The examination is based on taking a swab from the back of your nose or throat to collect a sample for testing. But instead of waiting days for your results, an antigen test can produce a result in an hour or less, she says US Food and Drug Administration.

And although antigen tests are very accurate, their problem is that they may miss an active infection. If it may give a negative result, despite the virus being carried, and no symptoms appear.

Antibody test

This test is looking for Antibodies Coronavirus. Antibodies are proteins produced by your immune system to fight foreign invaders, such as Viruses.

The COVID-19 antibody test cannot diagnose an active virus infection. All it tells you is whether you were injured at some point in the past, even if it happened months ago.

And the antibodies don’t become detectable until at least several days after the infection begins. An antibody test is not recommended until at least 14 days after symptoms begin.

Source link


Please enter your comment!
Please enter your name here