For most people, having an at-home COVID test or two handy is just a normal part of life these days. But, if you happen to take a test and get a positive you weren’t expecting, it’s more than ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." TAKING A COVID-19 TEST is probably your first instinct when you wake up with a fever or sore throat or ...

PCR tests are the gold standard for COVID-19 diagnosis, but they’re not always accurate. False positives and false negatives both have negative repercussions and risks for patients. New research ...

A study that analyzed genes in nasal swabs from asymptomatic people who tested positive for SARS-CoV-2 showed the results could be attributed to occupational exposure rather than infection. For some ...

Lack of glove changes at COVID-19 testing centers in Belgium led to major cross-contamination of samples and a high rate of false positive results, research being presented at this year's European ...

Even very accurate tests in the lab can result in a vast majority of false positives in the field. This “false positive paradox” from testing people without symptoms led to a “false positive ...

Mesa Biotech has recalled some of its COVID-19 tests because they may give false positive results after it was determined the facility where they were made was contaminated. The recalled Accula ...

There are three different ways to test for COVID-19: PCR tests, antigen tests and antibody tests. Each method is best for a different stage of COVID-19 infection. Used in sequence, all three methods ...

PCR swab tests that look for viral RNA have become the gold standard for identifying infection with the SARS-CoV-2 virus, but their results aren't 100% accurate. Researchers report that testing for ...

A new study analyzed genes in nasal swabs from asymptomatic people who tested positive for SARS-CoV-2. The study found a cluster of people who worked together in a lab that focuses on plasmids.