The angiotensin converting enzyme (ACE) is an enzyme that converts angiotensin I to angiotensin II. Angiotensin II helps increase blood pressure by causing small blood vessels in the body to tighten ...

With home testing options increasing more than ever, you now also have the ability to test for kidney function within the comfort of your own home. Learn more about our four best picks for 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.

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 ...

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 ...

Longevity isn't just about how long you live — it's also about staying healthy for as much of that time as possible. The "sit to stand" test can be a good way to figure out how healthy you are, and it ...

What Is a Food Allergy Test? A food allergy test is a skin or blood test that helps you and your doctor figure out if you’re allergic to specific foods and which ones. Or if you think certain foods ...

You really should run an internet speed test to check your Wi-Fi connection. Knowing a few key data points, like your download speed and upload speed, will help you ...

The 6 Best Free Speed Test Apps to Check Internet Performance Your email has been sent In the remote work era, reliable Wi-Fi is a must. From testing network performance to locating nearby ...

Kate Colby, MPH, is a public health expert with extensive experience in infectious disease epidemiology. You may wonder how to know when or if you should get a flu test if you have flu-like symptoms.

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 ...

Standardized, repeatable testing is central to all of the 1,500-plus reviews we publish annually. Here's how we test every laptop that hits the bench at PC Labs using 24 different benchmarks. From the ...