Stress tests are safe, noninvasive ways to detect heart-related issues or determine your fitness level. Learn more about the types of tests and how they're done here.

An aptitude test is an exam or survey used to determine an individual's propensity to succeed in a given activity. Learn how companies and schools use aptitude testing.

First of all, the most important test of a drug allergy is not a laboratory test or a skin test at all, but a careful history of what happened when the allergic reaction occurred previously. That ...

Learn about what blood types are, how people can determine their blood type, and how blood types affect transfusions.