What is Vitamin A (Retinol)?
for vision, immunity, and skin
Vitamin A is needed for vision, immunity, and skin function. The value reflects storage and intake.
Deficiency is uncommon in Sweden but can occur with malabsorption or very restrictive diets. High intake from supplements can be harmful.
Test facts
- Unit
- µmol/L
- Sample
- Serum
- Fasting
- No fasting needed
- Turnaround
- 5 days
What does low Vitamin A (Retinol) mean?
Low vitamin A can produce poor night vision, skin problems, and impaired immunity.
What does high Vitamin A (Retinol) mean?
High vitamin A almost always reflects excess supplementation and can be liver-toxic.
Panels that measure Vitamin A (Retinol)
- Core Vitamins
- Vitamins & Minerals Full
More markers in the same area
Launching in Stockholm in 2026.
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This is general information about the marker, not an assessment of your values and not medical advice. Last updated: May 2026.