A decision by the U.S. Supreme Court could have far-reaching implications on how law enforcement catches drunken drivers. In the past, if a suspected drunken driving suspect refused to give a breath ...

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 ...

An Hgb blood test measures a person’s hemoglobin levels. This protein helps red blood cells carry oxygen and keep cells and organs functioning. Low hemoglobin is known as anemia. Hemoglobin is also ...

It's a blood test that measures the amount of glucose-6-phosphate dehydrogenase (G6PD) in your body. G6PD is an enzyme that helps your red blood cells work properly. If your G6PD level is too low, you ...

Thyroxine (T4) is the main hormone your thyroid makes. Your thyroid hormones are important because they control how your body uses energy from the food you eat. (Photo Credit: iStock/Getty Images) T4 ...

From robotic surgery performed 7,000 miles away to the first blood test to help diagnose Alzheimer's disease, 2025 has been a ...

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 ...