A magnesium blood test measures the amount of magnesium, an important mineral, in your blood. Your body needs magnesium from your diet to help your muscles, nerves, heart, and immune system work ...

Blood tests are one of the most widely used and helpful tools in modern medicine. Whether ordered in a clinic or done through an at-home kit, they work by analyzing samples of your blood to uncover ...

The practice of drawing blood has changed very little over the decades. It looks about the same now as it did 50 years ago. That process, however, may be about to get a modern makeover. Several health ...

ROANOKE, Va. – One of the most dreaded parts of being in a hospital for most patients is needles. This is especially true if you need your blood drawn multiple times during a stay, which is often the ...