Mark Gurarie is a writer covering health topics, technology, music, books, and culture. He also teaches health science and research writing at George Washington University's School of Medical and ...

A blood osmolality test measures the blood for the concentration of certain dissolved particles. This test can show whether a person has an irregular balance of fluids in their body. Osmolality tests ...

With heart attacks, every second counts. A new blood test diagnoses them in minutes rather than hours and could be adapted as a tool for first responders and people at home. "Heart attacks require ...

A new kind of blood test promises to find cancer early—sometimes even before symptoms appear. The pitch is compelling: a ...

Doctors can test for gallbladder issues using a combination of physical exams, blood tests, and imaging studies. Several issues can affect the gallbladder, including gallstones, inflammation, or ...

At the 20th International Conference on Alzheimer’s and Parkinson’s Diseases and Related Neurological Disorders (AD/PD) in ...