Vitamin A (Retinol) Test
A fat-soluble vitamin essential for vision, immune function, and skin health.
What is Vitamin A (Retinol)?
A fat-soluble vitamin essential for vision, immune function, and skin health.
Vitamin A (Retinol) Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| age 18+ | 38.0 – 98.0 mcg/dL |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
What your Vitamin A (Retinol) result may mean
Usually reflects supplement excess. Toxicity can cause headaches, liver damage, and birth defects.
Can reflect malabsorption, liver disease, or inadequate dietary intake.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Related Vitamins & Nutrients biomarkers
Markers commonly tested alongside Vitamin A (Retinol).
Frequently asked
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