Gonadotropin-releasing hormone (GnRH) mass concentration in serum/plasma
This test measures the amount of gonadotropin-releasing hormone (GnRH) in your blood. GnRH is a hormone that plays a key role in regulating reproductive function.
["GnRH helps control the release of other hormones involved in fertility and hormone balance."]
Key facts at a glance
- LOINC
- 13660-6
- Short code
- GnRH SerPl-mCnc
- Synonyms
- GnRH SerPl-mCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What Is GnRH Used For?
GnRH testing is often part of evaluations for fertility issues, hormonal imbalances, or conditions affecting the pituitary gland. It may also be used in monitoring certain treatments, such as hormone therapy or fertility medications.
How Is This Test Performed?
A blood sample is taken from a vein, usually in your arm. The sample is then sent to a lab for analysis using a specialized immunoassay method to measure GnRH levels precisely.
Why Might You Need This Test?
Your healthcare provider may recommend this test if you have symptoms like irregular periods, low libido, infertility, or signs of hormonal disorders. It can also help diagnose conditions like pituitary tumors or other reproductive health concerns.
What Does a GnRH Test Tell You?
The results help assess whether your body is producing enough GnRH to function properly. Abnormally high or low levels may indicate underlying health issues that need further investigation.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Gonadotropin-releasing hormone (GnRH) is a critical hormone that stimulates the pituitary gland to release other hormones, including follicle-stimulating hormone (FSH) and luteinizing hormone (LH). Abnormal GnRH levels can disrupt reproductive function, fertility, and overall hormonal balance. This test is particularly useful in diagnosing conditions affecting the hypothalamus-pituitary axis, such as tumors, genetic disorders, or chronic illnesses.
Short name
GnRH level
Frequently asked questions
What does a GnRH test measure?
How long does it take to get results from this test?
Can lifestyle changes affect GnRH levels?
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