Complement C4, Serum
Complement C4, Serum is a clinical biomarker on the Immune panel, reported in mg/dL. Standard reference range: 14–44 mg/dL. Functional (optimal) range used by integrative practitioners: 20–40 mg/dL.
What is Complement C4, Serum?
Complement C4 is a classical-pathway complement protein made mainly by the liver; it is consumed during immune complex-mediated inflammation, making it a useful marker for tracking autoimmune disease activity and complement deficiency states.
Reference ranges
| Range type | Value (mg/dL) | Source |
|---|---|---|
| Standard (lab) | 14–44 | Typical Quest / LabCorp adult reference |
| Functional (optimal) | 20–40 | Integrative / functional medicine consensus |
How SomaVue interprets Complement C4, Serum
SomaVue maps every result for Complement C4, Serum against four clinical lenses — nutrient cofactors, toxin exposure, infection drivers, and circadian/hormonal context — and connects each interpretation to specific peer-reviewed citations. Pre-mapped clinical reasoning and cross-marker pattern detection are available inside the practitioner workspace.
See the full interpretation
Upload a patient PDF from Quest, LabCorp, Access Medical Labs, LifeLabs, Vibrant, Rupa, or any other lab — or enter values manually. See the four-lens analysis, cross-marker patterns, and cited evidence for Complement C4, Serum and 223 other markers.
Try it freeEducational reference only. Reference ranges vary by laboratory, assay method, age, sex, and clinical context. Functional ranges represent integrative-medicine consensus and are not regulatory thresholds. SomaVue does not diagnose, treat, mitigate, or prevent disease. Always consult a licensed healthcare provider.