Vitamin A
Clinical Biochemistry
Sample and container requirements
Serum
Minimum volume required
500 μL serum
Special requirements
Protect from light.
Patient preparation
None
Sample viability
Turnaround time
21 days
Reference range
≤ 6 years: 0.70 – 1.50 μmol/L 7 – 12 years: 0.90 – 1.70 μmol/L 13 – 18 years: 0.90 – 2.50 μmol/L Adult Males: 0.77 – 3.95 μmol/L Adult Females: 0.99 – 3.35 μmol/L (Source: City Hospital, Birmingham)
Clinical guidance
Please refer to LabTestsOnlineUK to learn more about vitamin A. https://labtestsonline.org.uk/tests/vitamin
Notes
Protect sample from light immediately after collection.
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This information was last updated on 19 August 2026