Vitamin A (Retinol) — Blood Levels, Deficiency and Excess
Updated: June 2025
Vitamin A (Retinol) is a fat-soluble vitamin essential for vision, immunity, reproduction, and skin health. Deficiency leads to impaired night vision, dry skin, and weakened immunity.
Reference Range
0,3–0,7 мг/л (1,05–2,45 мкмоль/л)
Causes of Elevation
- Excessive intake (hypervitaminosis A)
- Retinoid medications
- Chronic kidney disease
- Hyperlipidemia
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