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FSH (Follicle Stimulating Hormone) 24-Hour Urine Rate

Published: August 9, 2026Updated: August 16, 2026

This test measures how much Follicle Stimulating Hormone your body releases over a 24-hour period in your urine. It helps assess hormone balance, especially in conditions affecting reproductive health.

Quick summary

["Assesses long-term FSH release in urine to evaluate reproductive hormone function."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
14734-8
Short code
FSH 24h Ur-sRate
Synonyms
FSH 24h Ur-sRate
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Ref low
3.5
Ref high
12.5
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
83001
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like irregular periods, infertility, or signs of hormonal imbalances. It can also help diagnose conditions like polycystic ovary syndrome (PCOS) or other hormonal disorders.

What to Expect Before the Test

No special preparation is needed. You’ll provide a 24-hour urine sample collected in a container, starting and ending at the same time each day. Drink plenty of water to help flush hormones naturally.

How the Test Works

Your urine is collected and analyzed to measure the total amount of FSH excreted over 24 hours. The test detects FSH levels in your urine rather than in blood, offering a broader picture of hormone secretion patterns.

Possible Results and Interpretation

Results are compared to a reference range based on age, sex, and health status. High or low rates may indicate hormonal imbalances, but individual results should be discussed with your provider.

Reference range

Follicular: 3.5-12.5 mIU/mLN/A

Specimen: urine

For females: inform if menstrual cycle status. For certain tests, timing within menstrual cycle may matter.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Urine FSH Rate

Frequently asked questions

Why might my urine FSH rate be checked?
Your provider may recommend this test if you have unexplained infertility, irregular menstrual cycles, or symptoms like low libido or breast tenderness that suggest hormonal imbalances.
What does a high or low urine FSH rate mean?
A high rate may indicate overactive pituitary gland or other hormonal disorders, while a low rate could suggest conditions like hypothyroidism or pituitary tumors. Results are interpreted with your full medical history.
Can diet or medications affect this test?
Certain medications (e.g., birth control, thyroid hormones) or dietary changes (e.g., caffeine, alcohol) may influence hormone levels. Always inform your provider about all medications or supplements you take.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy