A polymerase chain reaction (PCR) test detects genetic material from a pathogen or abnormal cell sample. Ways of collecting samples include a nasal swab, a saliva swab, or taking a sample of blood.

Travelers heading to China have one less obstacle to consider before entering the country. Chinese Foreign Ministry spokesperson Mao Ning told reporters on Tuesday that a negative PCR test result is ...

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

Rapid COVID tests are convenient and easy to use because you can take them at home. But it's important to know how to interpret their results, when you should take another rapid test and when you ...

Molecular tests are far superior to rapid antigen tests—and now you can get them for home use. Amanda Blum is a freelancer who writes about smart home technology, gardening, and food preservation.

Researchers have developed a working prototype of a PCR test for monkeypox that provides accurate, easy-to-read results The test works with a compact, portable system developed for COVID-19 ...

Although the COVID-19 pandemic is not yet officially over, it appears to be tapering off worldwide. Earlier this month, the Director General of the World Health Organization (WHO) stated that he ...