Complement C4
Complement C4 participates in the classical immune cascade helping focus antibody responses against targets.
Test your personal value
Enter the number from your lab report to instantly see how it compares to reference ranges.
Physiological Reference Ranges
The ranges below represent standard adult physiological values. Your laboratory's printed reference range always takes precedence.
0.15 – 0.45 g/L
0.15 – 0.45 g/L
0.15 – 0.45 g/L
What does a low result mean?
A modest dip can be a constitutional variation or reflect transient engagement of the classical pathway.
What does a high result mean?
A mildly increased number is typical during transient systemic inflammation or physical stress.
Questions ready for your doctor
Bring these questions to your next consultation to discuss with your healthcare practitioner:
- Does this correlate consistently with my C3 level?
- Is a confirmatory follow-up test indicated?
- Is any specific monitoring required?
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Important information — Medical notice
ScanMyLab is for informational purposes only. It does not provide a diagnosis and never replaces the advice of your doctor or laboratory.