Book a Test- C4 (Complement-4)

C4, also known as Complement-4, is a protein that plays a crucial role in the immune system. It is part of the complement system, a group of proteins that work together to help eliminate pathogens from the body. C4 is produced by the liver and circulates in the blood. C4 helps to activate the complement system, which assists in removing pathogens from the body. It also helps to mark pathogens for destruction by other immune cells. Abnormal levels of C4 can indicate immune system disorders, such as autoimmune diseases or infections. Low levels of C4 may suggest that the immune system is not functioning properly, while elevated levels can be a sign of inflammation or infection. Measuring C4 levels can help diagnose and monitor conditions such as lupus, rheumatoid arthritis, and hepatitis. C4 is an important marker of immune system function and is often used in conjunction with other tests.