The anion gap blood test measures the acid-base and electrolyte balance in the blood. Results can show whether there is an imbalance in a person’s pH levels, which may be making the blood too acidic ...

Checking your blood pressure at home? Pay attention to arm position. A new study by Johns Hopkins researchers confirms that it makes a "huge difference" when it comes to getting an accurate ...

A study led by Johns Hopkins Medicine researchers concludes that commonly used ways of positioning the patient's arm during blood pressure (BP) screenings can substantially overestimate test results ...

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 ...

The way you’re positioned during a blood pressure reading can affect its accuracy, and supporting your arm on a table is best, a new study finds. Lap and side positions resulted in substantial ...

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 ...