
Information
What is a PCR test?
PCR stands for Polymerase Chain Reaction, and is widely used in medicine to detect the RNA of a specific organism. The sample is sent to a lab where special reagents convert the virus’ RNA into DNA. Millions of copies are then made of the DNA, allowing for the organism to be identified. The results are almost 100% accurate in detecting an infection when there is virus in the sample.
Pros & Cons of PCR Tests.
PCR test have become the gold standard for Covid-19 tests, but they can also cause some issues. Here are the highlights:
The Pros …
Almost 100% accuracy in detecting if you have been infected by Covid-19.
Self taken throat and nose swabs can be taken in the convenience of your own home.
Samples can survive transportation over several days to get back to the lab.
The Cons …
Results can stay positive for longer, even after recovery from a Covid-19 infection, compared to lateral flow tests.
Samples can take several hours to run, although faster machines that analyse samples within 4-6 hours are now widely used.
Swabs require throat and nasal swabs, which can be a little uncomfortable, especially for children.