For any American wondering if they have Covid-19, there are two kinds of tests available: polymerase chain reaction (PCR) and rapid antigen (sometimes just called "rapid tests"). The two tests work in ...

PCR tests are very accurate and can find the virus even in people without symptoms. Rapid tests can be done at home and show results in minutes. It’s important to follow instructions closely when ...

A widely shared claim on social media has brought the Centers for Disease Control and Prevention's decision to retire its PCR test for COVID-19 back into the spotlight. "CDC Withdraws Use of PCR Test ...

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Dr. Matt Binnicker, an expert in the diagnosis of infectious diseases, reviews scenarios where an at-home antigen test is a good option, and when to seek out a lab-based PCR. The omicron variant is ...

Every American traveling abroad needs to take an antigen test to return to the United States. But the start of the trip is often even more cumbersome, as many other countries (nearly every one I have ...

TOKYO--(BUSINESS WIRE)--Kaneka Corporation (TOKYO:4118) has released KANEKA RT-PCR Kit SARS-CoV-2 (L452R/E484Q/E484K/N501Y), a real-time PCR test kit capable of ...

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 ...

After two years of successfully evading getting COVID-19 — including a few brushes with close contacts, a couple of are-they-just-colds? scares and lots of negative tests — I recently tested positive.