Complement Component C4c details
What Complement Component C4c shows
Complement C4 is one of the core proteins in your complement system, part of your immune system's infection-fighting and immune-complex-clearing machinery. Low C4 is a common finding during active lupus flares, since complement proteins get consumed as they're activated by immune complexes, and is also seen in certain other immune-complex-related conditions and in some inherited complement deficiencies. C4 is typically tested alongside C3, since the pattern of both together — and how they trend over time — can help track disease activity in someone with a known autoimmune condition, or help work up a suspected new one.
Tests that include Complement Component C4c
Complement C4 is a blood protein that is part of the complement system, which supports the immune response by helping to fight infections and remove damaged cells. A C4 test is often used to help diagnose or monitor autoimmune conditions like systemic lupus erythematosus (SLE) and hereditary angioedema.
- Complement Component C4c A complement system protein involved in immune defense. Low levels are associated with active autoimmune conditions like lupus, or certain genetic deficiencies.
Complement C4 is a blood protein that is part of the complement system, which supports the immune response by helping to fight infections and remove damaged cells. A C4 test is often used to help diagnose or monitor autoimmune conditions like systemic lupus erythematosus (SLE) and hereditary angioedema.
- Complement Component C4c A complement system protein involved in immune defense. Low levels are associated with active autoimmune conditions like lupus, or certain genetic deficiencies.
Decreased concentrations of both C3 and C4 suggest activation of the classical pathway, whereas decreased concentration of just C3 suggests activation of the alternative pathway. Both complement factors may be used to monitor activity of patients with systemic lupus erythematosus (SLE) and immune complex-induced vasculitis.
- Complement Component C3c One of the main proteins in your complement system, part of your immune defense. Low levels can indicate active autoimmune disease or certain infections.
- Complement Component C4c A complement system protein involved in immune defense. Low levels are associated with active autoimmune conditions like lupus, or certain genetic deficiencies.
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