Kaitlin Sullivan is a health and science journalist based in Colorado. She's been part of multiple award-winning investigations into health topics including the international medical device industry ...

Carley Millhone is a writer and editor based in the Midwest who covers health, women's wellness, and travel. Her work has appeared in publications like SELF, Greatist, and PureWow. Jay N. Yepuri, MD, ...

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 ...

A potassium blood test measures the potassium level in your blood to check your general health and diagnose conditions. Potassium helps regulate important body functions like muscle contractions and ...

Skin tests for allergies include skin prick testing, intradermal testing, and skin patch testing. Skin tests are generally safe but can cause irritation or, rarely, a severe allergic reaction called ...