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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 by source

Published adult intervals: 4, from 3 named sources, shown in µg/dL.

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)

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

More tests in the vitamins category.

Vitamin D, 25-Hydroxy

Vitamin D, 1,25-Dihydroxy

Vitamin B12 (Cobalamin)

Methylmalonic Acid (MMA)

Sources

ARUP Laboratories

Mayo Clinic Laboratories

Quest Diagnostics

Last updated 2026-05-02

This page presents source-specific reference data and sourced explanations. For general wellness information only. This is not medical advice. For diagnosis or treatment of any condition, talk to a qualified clinician.

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