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C3 Complement Blood

Discover the power of a C3 Complement Blood Test, and gain valuable insights to stay on top of your well-being.

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By Wynona Jugueta on Aug 2, 2025.

Fact Checked by Ericka Pingol.

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C3 Complement Blood Template

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Commonly asked questions

The C3 Complement Blood Test evaluates the level or activity of the complement component C3 to help diagnose immune deficiencies, autoimmune diseases, chronic infections, and monitor conditions like kidney disease. It assists medical professionals in understanding the immune system’s function and inflammatory responses.

In systemic lupus erythematosus (SLE), C3 levels are typically low due to complement consumption during immune complex formation. Monitoring C3 helps assess disease activity and treatment effectiveness in lupus patients.

Elevated C3 and C4 levels may indicate acute inflammation, infections, or conditions like obesity and diabetes. High levels are nonspecific but signal an activated immune response that requires further evaluation.

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