Individual test · Labcorp 001941

Complement, Total (CH50)

This test measures the activity of the complement system, a group of proteins in your blood that helps your immune system fight infections. It helps show whether these proteins are working together properly or if they are being used up by chronic inflammation. Doctors often use this measurement to monitor autoimmune conditions like lupus or to check for missing immune system components. However, a normal result does not rule out all immune issues, as it does not measure the exact amount of every specific protein individually.