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 ...

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 ...

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 ...

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 ...

A hydrogen breath test can help determine if you have one of a few conditions that can affect your digestive health. It may tell you if you have too much bacteria in your gut, if you are lactose ...