Available to Windows Insiders, the built-in tool measures your upload and download speeds over Ethernet or Wi-Fi.

Compare the 6 best free internet speed test apps for 2026. Test Wi-Fi speed, latency, upload and download performance, and diagnose connection issues.

The FM/a test is still new and subject to research. Many doctors don’t use it yet, and insurers may not cover the cost. Doctors may still use current diagnostic criteria as confirmation. Fibromyalgia ...

Cortisol, also known as the stress hormone, plays a vital role in the body by maintaining blood pressure and blood sugar. It also breaks down carbohydrates, lipids (fats), and proteins. Cortisol can ...

As the nation experiences what many experts believe is the second-largest wave of COVID infections since the pandemic started, many Americans will be checking to make sure they don’t have the ...

A false positive result is possible with a rapid COVID-19 test. It happens when a person does not have COVID-19 but still tests positive for the disease. People can use a rapid COVID-19 test at home ...

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.

If you live with performance anxiety, taking a test can be overwhelming. But test anxiety can be managed and these tips may help. Test anxiety is a common form of performance anxiety, which can create ...

A lipase test is a blood test that measures the level of a digestive enzyme called lipase in your blood. It may also be referred to as a serum lipase or LPS. What is lipase? Your doctor might order a ...

We regularly answer frequently asked questions about life during the coronavirus crisis. If you have a question you'd like us to consider for a future post, email us at goatsandsoda@npr.org with the ...