A PCR test is often considered the best standard for detecting coronavirus infection. It is the test that some employers want employees to do before returning to work after passing Covid and the one that some people do when they want to travel. But experts say the PCR test is not the best for every situation.
The PCR test is able to diagnose Covidine and can detect the virus even in small amounts. So this means that PCR results can be positive even after you are no longer contagious.
According to a PCR test, you may be positive after three or four weeks of recovery because it "gets past infection and small fragments (of the virus)," said CNN medical analyst Dr. Leana Wen, an emergency physician. and professor. After 7 to 10 days, "the PCR test is not a proper test."
The right time to do a PCR test is when you have had an exposure to someone with Covid or you suspect someone has Covid, or you are experiencing symptoms and want to find out if you have an infection. This is important because up to two days before symptoms or one or two days after (onset) of symptoms, people may have the highest risk of infecting others.
A quick antigen test is the test you should do after taking Covid-19 for a few days and want to confirm that you are probably no longer contagious to other people. Infectious means that your body has enough virus to infect someone else and this only happens over a period of time. The ability to infect others follows a curve after someone is exposed.
The current CDC guideline for isolating people who have tested positive for coronavirus is to have a rapid test when they are nearing the end of their five-day isolation period. Those who test positive again after a rapid test should continue isolation for up to 10 days after the onset of symptoms. People who test negative may stop self-quarantining, but should wear a mask around others until the 10th day.
