FSH (Follicle Stimulating Hormone) 24-Hour Urinary Rate
This test measures the amount of Follicle Stimulating Hormone (FSH) excreted in your urine over a 24-hour period. FSH is a hormone that plays a key role in reproductive health, influencing both male and female hormone production.
["Assesses long-term FSH levels in urine to help diagnose or monitor reproductive hormone imbalances."]
Key facts at a glance
- LOINC
- 2287-1
- Short code
- FSH 24h Ur-mRate
- Synonyms
- FSH 24h Ur-mRate
- 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 Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms or conditions related to reproductive hormone dysfunction, such as infertility, irregular menstrual cycles, or suspected hormonal imbalances. It may also be used to evaluate conditions affecting hormone secretion or excretion.
What to Expect Before the Test
No special preparation is typically required. You will likely be asked to collect all urine for a full 24-hour period, starting and ending with a voided sample. Store the urine samples at room temperature and return them to your lab on the same day.
How the Test Works
The collected urine is analyzed to determine the total amount of FSH excreted over the 24-hour period. This helps provide a more comprehensive picture of your body’s hormone production and regulation compared to a single blood test.
What the Results Mean
Results are compared to reference ranges that can vary by lab and individual health status. High or low rates may indicate conditions such as hypogonadism, hypergonadotropic hypogonadism, or other reproductive hormone disorders.
Reference range
Follicular: 3.5-12.5 mIU/mLN/A
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
24-Hour Urinary FSH Rate
Frequently asked questions
What does a 24-hour urinary FSH rate test measure?
Why might my doctor order this test?
Can I take medications before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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