Vitamin A (Retinol)
Vitamin A is needed for vision, skin and immunity. The level depends on diet and on fat absorption in the gut.
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Normal ranges
Adults: 0.3–0.8 µg/mL.
Units: µg/mL
Causes of deviations
Low levels:
Poor dietary intake, fat malabsorption, liver disease.
High levels:
Overdose of vitamin or retinoid preparations.
When to see a doctor
If the value is outside the range, discuss it with your doctor.
Related biomarkers
Panels
Vitamin panel
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