Voyage Medical

How Do COVID 19 PCR Tests Work?

In order to control the spread of COVID-19, testing is crucial. The COVID-19 PCR test has a high level of accuracy. In a sample, they produce several copies of the virus’ genetic material. This enables the test to find extremely little amounts of virus. A modified form of PCR known as the quantitative polymerase chain reaction is used for COVID-19 testing (qPCR). In order to assess the amount of genetic material in a sample, this technique incorporates fluorescent dyes into the PCR process. Here, healthcare professionals count the genetic material from SARS-CoV-2. 

Using a nasal swab or saliva tube, healthcare professionals gather samples to be tested before moving on to the next step. The pathogen that causes COVID-19, SARS-CoV-2, employs RNA as its genetic material. Reverse transcription, which transforms the PCR from single-stranded RNA to double-stranded DNA, comes first. Then, the two strands of the DNA template are split apart. When the DNA in the sample matches the SARS-CoV-2 primers and the pattern is amplified, producing millions of copies, a positive result is obtained. This shows that the sample is from an infected person. It is unlikely that a sample will test positive if viral RNA is not present because the primers only amplify the genetic material from the virus. A false positive is what is known if it does. A negative result is obtained when there is no amplification and the SARS-CoV-2 primers do not match the genetic makeup of the sample. This indicates that there were no viruses in the sample. When a person is affected but the sample has insufficient viral genetic material for the PCR test to identify it, a false negative result is produced. 

You can find out if you’ve ever been infected with the virus that caused COVID-19 by having tests for antibodies. Your body produces antibodies after contracting SARS-CoV-2 or after receiving a COVID-19 vaccination. These exams are known as “serology” or “antibody” testing. For the purpose of halting the spread of COVID-19, testing is crucial. Your healthcare provider and you should always talk about the results of your tests.

About Us

We are a team focusing on quality Healthcare And Clinical Research. Vaccination before travel is extremely important. It protects you and protects those around you. It ensures global public health. 
Links to our Social Media

Recent Posts

Category

Categories

Facebook Page