Your complement system consists of a group of important proteins in your bloodstream. These proteins help your immune system fight off harmful invaders, such as bacteria, and other foreign substances.

Fresh mint so rarely gets its due in America. We gladly pair it with chocolate and fruit, but it almost never makes appearances in savory dishes. But the rest of the world knows better, adding it with ...

A complement blood test measures how well complement proteins in your blood support immune defense. The complement system helps antibodies fight germs and clear foreign substances. Complement testing ...