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Vitamin A (Retinol)
Vitamins
Vitamin A (Retinol)
Also known as: Vit A
COMMON RANGE
32.5 – 78
µg/dL
0.43
131
M
Mayo Clinic Laboratories
Adult
↗
See all sources ↓
CONVERT & COMPARE
µg/dL
=
1.93
µmol/L
=
55.3
mcg/dL
=
55.3
ug/dL
=
1.93
umol/L
=
1.93
mcmol/L
Reference ranges across 10+ sources
Adult reference ranges from 4 entries across 3 named sources, shown in µg/dL. Compare side-by-side.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
A
ARUP Laboratories
All
≥18y
30 – 120 µg/dL
↗
M
Mayo Clinic Laboratories
All
13y–18y
14.4 – 97.7 µg/dL
↗
M
Mayo Clinic Laboratories
All
≥18y
32.5 – 78 µg/dL
↗
Q
Quest Diagnostics
All
≥18y
38 – 98 µg/dL
↗
A
ARUP Laboratories
All · ≥18y
↗
30 – 120 µg/dL
M
Mayo Clinic Laboratories
All · 13y–18y
↗
14.4 – 97.7 µg/dL
M
Mayo Clinic Laboratories
All · ≥18y
↗
32.5 – 78 µg/dL
Q
Quest Diagnostics
All · ≥18y
↗
38 – 98 µg/dL
Ages 0–17 (CALIPER)
PEDIATRIC
2 age- and sex-stratified entries from the Canadian Laboratory Initiative on Pediatric Reference Intervals.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
M
Mayo Clinic Laboratories
All
0–7y
11.3 – 64.7 µg/dL
↗
M
Mayo Clinic Laboratories
All
7y–13y
12.8 – 81.2 µg/dL
↗
M
Mayo Clinic Laboratories
All · 0–7y
↗
11.3 – 64.7 µg/dL
M
Mayo Clinic Laboratories
All · 7y–13y
↗
12.8 – 81.2 µg/dL
Related biomarkers
Often tested alongside vitamin a (retinol) or part of the same panel.
Vitamin D, 25-Hydroxy
Vitamins
Vitamin D, 1,25-Dihydroxy
Vitamins
Vitamin B12 (Cobalamin)
Vitamins
Folate (Serum)
Vitamins
Folate (RBC)
Vitamins
Methylmalonic Acid (MMA)
Vitamins
Sources
A
ARUP Laboratories
M
Mayo Clinic Laboratories
Q
Quest Diagnostics
Last updated 2026-05-02
This page aggregates publicly available reference data and clinical information from Mayo Clinic Laboratories and other sources. For general wellness information only — not medical advice. For diagnosis or treatment of any condition, talk to a qualified clinician.
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