Complement C3 Blood Test
Compare labs
| Feature |
Labcorp
|
Quest Diagnostics
|
|---|---|---|
| Price | $21.49 | $17.49 |
| Results in | ~2 business days | ~5 business days |
| Sample type | Blood Serum | Blood Serum |
| Require fasting | No | No |
About the test
Complement C3 is a protein in the immune system that plays a key role in the complement cascade, which helps fight infections and clear damaged cells. A C3 test measures its levels in the blood and is often used to evaluate immune function or inflammatory conditions. Low C3 levels may indicate autoimmune diseases like systemic lupus erythematosus (SLE) or complement system deficiencies, while elevated levels can be seen in acute or chronic inflammation.
Included biomarkers & Reference ranges
| Biomarker | Reference range |
|---|---|
| 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. | — |
Reference ranges vary by lab, age, and sex (M/F). Your report shows your exact range. Click any biomarker to see its optimal range and what your results mean.
How it works
- 1. Order online No referral or insurance
- 2. Get a requisition By email in 24–72 hours
- 3. Visit a draw center Bring a matching photo ID
- 4. Get results Securely by email
- These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
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