Read on to learn more about what a t-test is, the different formulas used, and when to apply each type to compare means and ...

Experts say gait speed, grip strength, balance, and endurance are some of the strongest predictors of long-term independence.

Biological age tests promise insights into aging, but are they accurate or useful? What science shows about benefits, limits, ...

I'm a Fitness & Nutrition writer for CNET who enjoys reviewing the latest fitness gadgets, testing out activewear and sneakers, as well as debunking wellness/fitness myths. In my free time I enjoy ...

A chemical stress test uses medications to simulate your heart’s response to exercise. A stress test can assess how well your heart performs during exercise. Your doctor may suggest a stress test if ...

Cognition can be generally defined as the state or processes of being able to perceive and judge reality effectively. Cognitive tests are designed to determine whether you may have any issues with ...

Medically reviewed by Kelly Wood, MDKey TakeawaysThyroid blood tests help figure out how well your thyroid gland is working.TSH helps the thyroid gland know when to make more thyroid hormones. Free T4 ...

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.

Facing long lines and shortages of home test kits during the latest surge, people are searching for answers about Covid tests. By Tara Parker-Pope Dani Blum and Nicole Stock Testing is essential to ...

Taking a pregnancy test too early can procure a false negative result. How do you know when it's time to take one?

Kimberly Dawn Neumann is a New York City-based magazine and book writer whose work has appeared in a wide variety of publications, including Women’s Health, Health, Cosmopolitan, Fitness, Prevention, ...

Shoulder problems are one of the most common complaints that doctors need to diagnose. Speed’s test and Yergason’s test are both ways for your doctor to physically examine the area around your ...