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Luteinizing Hormone (LH)
Hormones
Luteinizing Hormone (LH)
COMMON RANGE
1.3 – 9.6
mIU/mL
0
130
M
Mayo Clinic Laboratories
Adult Male
↗
See all sources ↓
CONVERT & COMPARE
mIU/mL
=
5.5
IU/L
Reference ranges across 10+ sources
Adult reference ranges from 8 entries across 4 named sources, shown in mIU/mL. Compare side-by-side.
SOURCE
SEX
AGE
RANGE
VISUAL
CITE
A
ARUP Laboratories
Male
≥18y
1.7 – 8.6 mIU/mL
↗
A
ARUP Laboratories
Female
≥18y
2.4 – 12.6 mIU/mL
↗
M
Mayo Clinic Laboratories
Male
≥18y
1.3 – 9.6 mIU/mL
↗
M
Mayo Clinic Laboratories
Female
≥18y
0.7 – 118 mIU/mL
↗
L
Labcorp
Male
≥18y
1.5 – 9 mIU/mL
↗
L
Labcorp
Female
≥18y
2 – 70 mIU/mL
↗
Q
Quest Diagnostics
Male
≥18y
1.5 – 15.2 mIU/mL
↗
Q
Quest Diagnostics
Female
≥18y
0.5 – 76.3 mIU/mL
↗
A
ARUP Laboratories
Male · ≥18y
↗
1.7 – 8.6 mIU/mL
A
ARUP Laboratories
Female · ≥18y
↗
2.4 – 12.6 mIU/mL
M
Mayo Clinic Laboratories
Male · ≥18y
↗
1.3 – 9.6 mIU/mL
M
Mayo Clinic Laboratories
Female · ≥18y
↗
0.7 – 118 mIU/mL
L
Labcorp
Male · ≥18y
↗
1.5 – 9 mIU/mL
L
Labcorp
Female · ≥18y
↗
2 – 70 mIU/mL
Q
Quest Diagnostics
Male · ≥18y
↗
1.5 – 15.2 mIU/mL
Q
Quest Diagnostics
Female · ≥18y
↗
0.5 – 76.3 mIU/mL
About Luteinizing Hormone (LH)
This test measures the level of luteinizing hormone (LH). A hormone is a chemical messenger in your bloodstream that controls the actions of certain cells or organs. LH is usually measured in a sample of your blood. But in certain cases, it may be measured in urine (pee).
LH plays an important role in sexual development in children and fertility in adults. LH levels are controlled by a complex system of hormones made in different parts of your body, so abnormal levels of LH may be a sign of a problem with any of these parts.
Main source: MedlinePlus ↗
Useful for
In women, an LH test may be used to help find the cause of infertility.
Find out when ovulation is about to happen if a woman is trying to get pregnant. Usually at-home tests are used to track ovulation. These tests measure LH in urine (pee).
Check for medical conditions that affect the ovaries.
Find the reason for irregular or stopped menstrual periods in women of childbearing age.
Help find out if menopause or perimenopause may have begun.
In men, an LH test may be used to help find the cause of infertility, a low sperm count, low testosterone levels, or a low sex drive.
Check for medical conditions that affect the testicles.
In women and men, LH testing may be used to help diagnose disorders of the pituitary gland and hypothalamus.
In children and teens, LH testing is most often used to help find out if a medical disorder is causing early or delayed (late) puberty.
Main source: MedlinePlus ↗
Interpretation
To understand the results of your LH test, your provider will consider your sex, age, symptoms, medical history, and the results of other hormone tests, especially your level of follicle stimulating hormone (FSH). Your provider can explain what the results of your LH test mean.
Lower-than-normal levels of LH in adults are often a sign of a problem with the pituitary gland or hypothalamus. These problems may make it hard for your body to make enough LH and FSH.
In women, low LH and FSH levels with missed periods may also be linked to extreme exercise, malnutrition, stress, or being very underweight.
For general wellness information only. Talk to a clinician about your specific results.
Main source: MedlinePlus ↗
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Related biomarkers
Often tested alongside luteinizing hormone (lh) or part of the same panel.
Thyroid Stimulating Hormone (TSH)
Hormones
Free T4 (Thyroxine)
Hormones
Free T3 (Triiodothyronine)
Hormones
Total T4 (Thyroxine)
Hormones
Total T3 (Triiodothyronine)
Hormones
Reverse T3 (rT3)
Hormones
Sources
A
ARUP Laboratories
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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