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 ...

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.

A gamma-globulin factor in the serum of patients with systemic lupus erythematosus that reacts with isolated cell nuclei 1 or nucleoprotein 2,3 has been detected in many ways. 4 The standard method of ...

Complement 3 glomerulopathy (C3G) is considered a very rare disease. With C3G, patients have issues with their immune system that cause kidney damage and symptoms such as swelling and changes in urine ...

Complement 3 glomerulopathy (C3G) is a rare kidney disease that is also considered an autoimmune disorder. There is no single cure for C3G, but several treatments may slow disease progression, protect ...