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A member asked:

Have common variable immune deficiency, and rheumy thinking lupus. just checked complement system and c1q binding assay came back high? lupus? other

A doctor has provided 1 answer

Inflammation: Complement components are phase reactants and go up with inflammation. This is a non specific finding.

Answered 2/23/2014

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People also searched for:

What is the best way to diagnose autoimmune disorders in immune deficient patient on IgG replacement? Rheumy suspicious of lupus, but not definitive
Im complement deficient. What does this mean? Low C3 and c4. joint pain, low back pain, rashes, anisocoria, low tsh, fatigue etc and it's not lupus
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