The 2016 Indianapolis 500 winner (photo) was fastest in both sessions Wednesday and overall in the two-day Open Test at the 1-mile desert oval.

A complement blood test measures how well complement proteins in your blood support immune defense. The complement system helps antibodies fight germs and clear foreign substances. Complement testing ...

What Is a Cortisol Test? A cortisol test measures the level of cortisol in your blood, urine or saliva. Cortisol is a hormone that's important throughout the body for maintaining blood pressure, blood ...

Psychology Today's online self-tests are intended for informational purposes only and are not diagnostic tools. Psychology Today does not capture or store personally identifiable information, and your ...

The Team Penske newcomer (photo) led a 1-2 result for the organization on the first day of the two-day test at the 1-mile desert oval.

You might need it to check your levels of calcium, an essential mineral you need to be healthy. This often routine procedure helps screen you for conditions and diseases that may affect your bones, ...