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Cortisol (Free, 24h Urine)
Urine
Cortisol (Free, 24h Urine)
Also known as: UFC, 24h Urine Cortisol
COMMON RANGE
3.5 – 45
µg/24h
0
92
M
Mayo Clinic Laboratories
Adult
↗
See all sources ↓
CONVERT & COMPARE
µg/24h
=
24.3
mcg/24h
=
24.3
ug/24h
Reference ranges across 10+ sources
Adult reference ranges from 4 entries across 3 named sources, shown in µg/24h. Compare side-by-side.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
M
Mayo Clinic Laboratories
All
≥18y
3.5 – 45 µg/24h
↗
L
Labcorp
Male
≥18y
11 – 84 µg/24h
↗
L
Labcorp
Female
≥18y
10 – 34 µg/24h
↗
Q
Quest Diagnostics
All
≥18y
4 – 50 µg/24h
↗
M
Mayo Clinic Laboratories
All · ≥18y
↗
3.5 – 45 µg/24h
L
Labcorp
Male · ≥18y
↗
11 – 84 µg/24h
L
Labcorp
Female · ≥18y
↗
10 – 34 µg/24h
Q
Quest Diagnostics
All · ≥18y
↗
4 – 50 µg/24h
Related biomarkers
Often tested alongside cortisol (free, 24h urine) or part of the same panel.
Urine pH
Urine
Urine Creatinine
Urine
Albumin-to-Creatinine Ratio (ACR)
Urine
Urine Specific Gravity
Urine
24h Urine Protein
Urine
24h Urine Calcium
Urine
Sources
M
Mayo Clinic Laboratories
L
Labcorp
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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