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 ...

High blood pressure is among the worst conditions anyone can endure. Not only can it drive you to heart attacks and strokes, but a routine test can also be surprisingly fragile. According to experts, ...

Medically reviewed by Anju Goel, MD You may need an MPV test if you show symptoms that suggest an issue with your platelet ...

Hemochromatosis is a disorder that causes your body to absorb too much iron. Blood tests that measure iron levels in your blood and liver can help diagnose the condition. The medical disorder ...

What Is an MCHC Blood Test? A mean corpuscular hemoglobin concentration (MCHC) blood test measures the amount of a protein called hemoglobin in your red blood cells. It’s one of many measurements ...

Nobody enjoys giving blood samples, but it’s a necessary part of many hospital stays and doctor visits. Soon we might not have to, thanks to a new device that can isolate biomarkers for different ...