Why do I need a complement blood test?
You may need a complement blood test if you have symptoms of an autoimmune disorder, especially lupus. Symptoms of lupus include:
A butterfly-shaped rash across your nose and cheeks
Fatigue
Mouth sores
Hair loss
Sensitivity to sunlight
Swollen lymph nodes
Chest pain when breathing deeply
Joint pain
Fever
You may also need this test if you are being treated for lupus or other autoimmune disorder. The test can show how well the treatment is working.
