Complement component 3, often called C3, is an essential protein of the immune system. This protein plays a vital role in the body’s innate immune system, providing: the first line of defense against ...

Complement 3 glomerulopathy (C3G) is diagnosed with a combination of a clinical evaluation, blood tests, urine tests, and a renal (kidney) biopsy. The only way to definitively diagnose C3G and its ...

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 ...