Vitamin C (Ascorbic Acid)
Vitamin C (ascorbic acid) is a water-soluble antioxidant essential for collagen synthesis, immune function, neurotransmitter production, and iron absorption. Unlike most mammals, humans cannot synthesize vitamin C and must obtain it from diet.
Vitamin C supports immune function through multiple mechanisms: enhancing neutrophil activity, supporting epithelial barrier function, and increasing antioxidant protection. Severe deficiency causes scurvy, while subclinical deficiency may impair wound healing and increase infection susceptibility.
Serum vitamin C reflects recent intake (hours to days) and is highly responsive to dietary changes. Smokers require approximately 35 mg/day more than non-smokers due to increased oxidative stress.
What It Measures
Plasma ascorbic acid concentration reflecting recent dietary vitamin C intake and antioxidant status.
Reference Ranges
| Status | Range (mg/dL) |
|---|---|
| Optimal | 1.0–2.0 mg/dL |
| Normal | 0.6–2.0 mg/dL |
| Borderline | 0.2–0.6 mg/dL |
| Out of Range | < 0.2 mg/dL (deficient) |
How GATOR Tracks This
Lab Providers
Related Biomarkers
This content is for informational purposes only and does not constitute medical advice. Reference ranges may vary by laboratory and individual factors. Consult a qualified healthcare provider for interpretation of your results and treatment decisions.
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