Starting in late September, you will be able to order another round of free COVID-19 tests from the government. Here's when and how to order them.

Hours before her test, a Generation Z woman took matters into her own hands to fix a practical problem that could have sabotaged her result.

Your blood contains a wealth of information about the state of your health. Analyzing the levels of each component is an important part of diagnosis.

Teachers from “liberal” states who have relocated to Oklahoma and are seeking to work there must take a controversial new assessment developed by conservative media company PragerU.

PCR-based techniques articles from across Nature Portfolio PCR-based techniques are methods that rely on the polymerase chain reaction (PCR) to amplify stretches of DNA by creating many identical ...

Here's what it means if you get a faint line on your at-home COVID test, including information about your level of infection and likelihood of spreading the virus.

We sipped our way through the fizzy "gut health" aisle to find the prebiotic and probiotic sodas worth drinking.

Find out what you need to know about candidiasis tests and discover how invasive candidiasis is diagnosed and treated.

You can now order four free tests on COVIDtests.gov. The site opened a day early in "beta phase" to "address troubleshooting," an official said.