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The PCR test for COVID-19 using a nasal swab is reliable and accurate. Positive results indicate the presence of the COVID-19 virus. If your COVID-19 test is negative, you probably did not have it. Get tested for COVID-19 if you have the symptoms or have had contact with someone who does.


What Exactly is a PCR Test?


What we call PCR, or polymerase chain reaction. The purpose of this analysis is to identify the presence of foreign genetic material, such as that of a virus. If you are currently infected with a virus, the results will reflect that. In certain cases, the test may detect traces of the virus even after fully recovering from your illness.


The COVID-19 Polymerase Chain Reaction Test: What is it?


The polymerase chain reaction (PCR) test for COVID-19 looks for genetic material (ribonucleic acid, or RNA) from the SARS-CoV-2 virus, which causes COVID-19, in a sample from your upper respiratory tract.


The PCR method converts low levels of RNA in samples into DNA, which is then replicated until the presence of SARS-CoV-2 is detected. The PCR test has been the standard for diagnosing COVID-19 since it was approved in February 2020. It's reliable and accurate to say that.


How to Go About With this Process?


Tests using polymerase chain reaction (PCR) amplify DNA sequences. DNA primers, DNA bases, enzymes, a buffer solution, and heat cycling are used to duplicate these sequences. The first step in any diagnostic process is for the tested person to supply a sample. The permitted types of samples are detailed below:-

  • A laboratory scientist uses specialised heating equipment to warm the material. As a result, the DNA inside is cut in half, creating two separate strands. Finally, primers can be attached to the template DNA sequences when the mixture cools. The temperature rises again to facilitate Taq polymerase's insertion of DNA bases into the templates. The original DNA sample is replicated in this method to produce two strands.

  • The machine can automate making identical copies of the DNA segment as often as necessary. A machine that can duplicate genetic material is used in a diagnostic PCR test. Yet, unlike DNA, RNA is used to create certain viruses.

  • These viruses' RNA undergoes reverse transcription PCR (rtPCR). In this way, the RNA is transformed into DNA, which can then be replicated.

  • Results from a PCR assay can be ready in as little as a few minutes or as many as several days. When using an on-site analyzer, results are sent rapidly. When doctors send samples to a lab that isn't part of their practice, it could take longer for patients to get their results.

SARS-CoV-2 is detected using a polymerase chain reaction. A systematic review and meta-analysis conducted in 2021 found that diagnostic tests for this virus were accurate 97.2% of the time.


Wrapping Up!


If you want to undergo a PCR test to determine your foetus’ health, consider consulting our specialists at Easy Medical Centre. We provide our patients with the necessary facilities to deliver better healthcare outcomes. Visit our website or contact us to know more about our services.


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