Animals whom no one thought would be able to identify their own reflection appear to be doing just that

A positive medical test can have very different meanings in different circumstances. Here's why

Experts say it could be as groundbreaking as previous at-home test inventions for HIV and pregnancy

If you test negative, but you have symptoms, you might want to test again

Trump claims that this test is "more accurate" than others. The FDA warns it "may return false-negative results"

A team of researchers goes through the most common questions about COVID-19 rapid tests

Donald Trump can't stop talking about passing a dementia test being proof of his self-professed genius.

"It is not remotely accurate that the CDC test doesn’t differentiate between flu and SARS-CoV-2"

“It’s not meant to determine if someone has extremely high levels of abilities,” Dr. Ziad Nasreddine says

The pandemic has forced difficult conversations about the limits of medical tests

Do you have to provide a urine sample? Here's a handy guide

This comprehensive report will give you a better understanding of how to care for your pooch

Without clear federal guidance, many parents with young kids in childcare are stuck in a loop of Covid quarantines

A vaccinated reader cares for a child with COVID; the reader now has symptoms too. Are negative tests ever wrong?

Trump's COVID-19 diagnosis is raising fresh questions about the White House's strategy for testing the coronavirus