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.

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 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 ...

At-home tests for a urinary tract infection (UTI) are convenient because they are easily available online or in drugstores without a prescription. A UTI applies to a range of infections affecting 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 ...

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 ...

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 ...

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 ...

Antibodies are a part of your immune system. They fight germs, but sometimes they make a mistake and target your body's healthy cells instead. The Coombs test checks your blood for antibodies that ...

On June 23, 1926, about 8,000 high school students across the United States took the first Scholastic Aptitude Test, known today as the SAT. That test looked very different than the one that about 2 ...

Questions from the world’s shortest IQ test even stumped students at Yale and Harvard! Maybe you have a dark sense of humor, or perhaps you failed your driver’s test—both are signs of intelligence, ...