Two types of COVID-19 tests, the rapid antigen test and the polymerase chain reaction (PCR) test, are available in the United States. The PCR typically relies on lab testing and is still considered ...

China continues to ease coronavirus-related travel protocols as the country announced inbound international tourists will no longer need to provide a negative PCR test, starting on April 29. According ...

LOS ANGELES (CNS) -- Travelers at Los Angeles International Airport can now get a COVID-19 PCR test with results guaranteed in less than hour, LAX officials announced Wednesday. "We continue to see a ...

April 25 (UPI) --Those traveling to China will no longer have to provide PCR test results, the country said on Tuesday, removing a major hurdle for visitors since the start of the COVID-19 pandemic.

BEIIJING (AP) — Travelers entering China will no longer need to provide a negative PCR test result starting Saturday, in another easing of China's “zero COVID” policies. Travelers can instead show a ...

Researchers often call the polymerase chain reaction test – known as the PCR test – "the gold standard" for detecting the COVID-19 virus. The test is considered highly reliable and effective, and it ...

RSV is short for respiratory syncytial virus. It’s a virus that can cause respiratory infections in your lungs, nose, and throat. It’s best to test for RSV soon after your symptoms start. That’s ...

You wake up with a scratchy throat, runny nose, and persistent cough, but your at-home COVID-19 test reads negative. How is this possible? The short answer is yes—you can still be infected. Many other ...

Polymerase chain reaction (PCR) test kits for COVID-19 use what’s known as gene cloning – not reproductive cloning – to detect the presence or absence of the SARS-CoV-2 virus, but social media posts ...