‌A complement C3 test will help your doctors track the progress and the condition of the disease. ... For example, lower levels of C3 and C4 are a sign of lupus.

A complement test is a blood test that measures the activity of a group of proteins in the bloodstream. It's often used to help monitor people being treated for autoimmune diseases like lupus and ...

The complement C4 test only requires basic preparation and carries few risks. The sample of your blood will be sent to a laboratory for analysis. The results will then be sent to your doctor.

What Happens During a C4 Test? C4 tests are done using a simple blood draw that is usually taken from a vein either on the inside of your elbow or on the back of your hand. You don’t need to do ...

An example of this is E.B., whose titer was 1:3. ... The nucleoprotein complement-fixation test is a sensitive and objective test for the diagnosis of systemic lupus erythematosus.

The complement cascade, a key regulator of innate immunity, is a rich source of potential therapeutic targets for diseases including autoimmune, inflammatory and degenerative disorders. Morgan and ...