Although uncommon, blood clots can form in the finger. They may appear as a small, discolored lump under the skin. A collection of blood can also form under the fingernail, commonly due to injury such ...

Researchers at Stanford Medicine have shown they can measure thousands of molecules — some of which are signals of health — from a single drop of blood. The new approach combines a microsampling ...

Blood clots form naturally as a way to stop bleeding when someone is injured. But blood clots in patients with medical issues, such as mechanical heart valves or other heart conditions, can lead to a ...