COVID-19 Testing: An Introduction to the Different Screening Techniques

The corona pandemic took the world by surprise, but ingenious scientific intervention helped curve the infection as the world tried to take back control. One significant aspect of keeping the virus under control was learning how to screen for the disease.  

Screening for a contagious infection or disease helps keep everything under control and reduces the spread of the virus. Therefore, it’s crucial to identify cases regardless of whether or not you exhibit symptoms.  

Why Is Screening Important in Asymptomatic Cases 

Many COVID cases were asymptomatic, meaning that the victims did not feel like anything was wrong. When cases were asymptomatic, the patients did not need to worry about dealing with any harsh scenarios or ending up in a hospital.  

However, just because they did not display symptoms did not mean they had no reason to worry. A significant problem with the pandemic was that it spreads so quickly. Therefore, you do not have to just worry about yourself; you also need to worry about the people around you.  

Just because you don’t exhibit symptoms doesn’t mean that someone catching it from you will also not show anything. An asymptomatic person may easily pass the disease off to another person. For example, someone visiting their grandma or visiting their new niece or nephew may unknowingly pass a deadly version of the disease off to another person.  

People must know their contagion status before going out into the general public (if you have to). Therefore, accurate screening techniques are crucial to keep everything under control. Luckily, there are many different ways to obtain these results.  


Polymerase chain reaction (PCR) techniques involve some lab work. Viruses, by nature, are microscopic. To see it in a sample, there needs to be a lot more of it than you take in a single sample.  

PCR allows scientists to replicate targeted material until it is more “visible rapidly.” It takes some time to complete but is a very accurate way to detect active infections.  


Lateral flow tests (LFT) are another technique used to detect an active strain. They aim to detect specific substances associated with COVID-19 infections. They are incredibly fast, however, not as accurate as PCR tests.  

Antibody Tests  

When a disease infects your body, it leaves “footprints” as evidence it was there before. These footprints, or antibodies, are detectable following an infection. Antibody corona tests can detect that you encountered the disease in the past, but it does not indicate when you did.  

Our community at PCR-Dx is here to help you learn about the services available to you. Our cutting-edge facilities and state-of-the-art equipment have everything you need for affordable and accurate results. We aim to bring you fast results during these uncertain times. You can count on us to provide reliable services you can trust and depend on. Contact us today for more information about the testing options that will work with your institution.