A fasting blood test requires you to avoid eating or drinking anything for some time before your test. The amount of time to fast varies for different tests. It’s generally in the range of 8 to 12 ...

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.

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 ...

Using at-home cholesterol tests is a convenient way for people to test their cholesterol levels without needing to make an appointment with a healthcare professional. Some can be bought with a HSA or ...

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 ...

We independently review everything we recommend. We may make money from the links on our site. Learn more› By Ellen Lee Ellen Lee is a writer focused on parenting and health gear. She has tried dozens ...

The best free internet speed test apps are Meteor for app-performance insights, Speedtest by Ookla for all-around testing, FAST for quick ad-free checks, Speedcheck for test history, and Speed Test ...

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 ...

Testing your internet connection’s performance is even more important with millions of extra workers working from home. You don’t need any extra software—a web ...

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 ...