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Estriol (E3)

Hormones

Estriol (E3)

Also known as: Unconjugated Estriol, Free Estriol

COMMON RANGE

0 – 0.22

ng/mL

0

0.242

A

ARUP Laboratories

Adult Male

See all sources ↓

CONVERT & COMPARE

ng/mL

=

0.347

nmol/L

=

0.1

µg/L

=

0.1

mcg/L

=

0.1

ug/L

Reference ranges by source

Published adult intervals: 6, from 3 named sources, shown in ng/mL.

SOURCE

SEX

AGE

RANGE

VISUAL

CITE

A

ARUP Laboratories

Male

≥18y

0 – 0.22 ng/mL

A

ARUP Laboratories

Female

≥18y

0 – 0.2 ng/mL

M

Mayo Clinic Laboratories

Male

≥18y

≤0.07 ng/mL

M

Mayo Clinic Laboratories

Female

≥18y

≤0.08 ng/mL

Q

Quest Diagnostics

Male

≥18y

≤0.18 ng/mL

Q

Quest Diagnostics

Female

≥18y

≤0.21 ng/mL

A

ARUP Laboratories

Male · ≥18y

0 – 0.22 ng/mL

A

ARUP Laboratories

Female · ≥18y

0 – 0.2 ng/mL

M

Mayo Clinic Laboratories

Male · ≥18y

≤0.07 ng/mL

M

Mayo Clinic Laboratories

Female · ≥18y

≤0.08 ng/mL

Q

Quest Diagnostics

Male · ≥18y

≤0.18 ng/mL

Q

Quest Diagnostics

Female · ≥18y

≤0.21 ng/mL

Related biomarkers

More tests in the hormones category.

Thyroid Stimulating Hormone (TSH)

Free T4 (Thyroxine)

Free T3 (Triiodothyronine)

Total T4 (Thyroxine)

Total T3 (Triiodothyronine)

Reverse T3 (rT3)

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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