Vitamin C (Ascorbic Acid) — Normal Range, Deficiency, Testing
Updated: June 2025
Vitamin C (Ascorbic Acid) is a water-soluble vitamin and powerful antioxidant. Involved in collagen synthesis, iron absorption, and immune function. Severe deficiency causes scurvy.
Reference Range
4–20 мг/л (23–114 мкмоль/л)
Causes of Elevation
- Dietary insufficiency (main cause of deficiency)
- Smoking (increased consumption)
- Malabsorption
- Chronic diseases
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