What Is The FSH Test?
FSH (Follicle-Stimulating Hormone) is a hormone produced by the pituitary gland and plays a vital role in reproductive health for both male and females. The FSH test measure the levels of FSH hormone in blood stream. The hormone regulates the growth and development of eggs in women and production of sperm in men. Your doctor may recommend the test to evaluate fertility, investigate menstrual irregularities, diagnose reproductive organ problems or assess conditions like menopause or puberty onset in children.
The test is often used to assess and understand ovarian reserve in women, especially for fertility assessments. It also helps diagnosing low sperm count or testicular dysfunction in men. The test is also helpful in assessing delayed or early puberty in children.
How is the Test Performed?
FSH is usually performed on blood sample:
Sample Collection
A qualified healthcare professional will draw a sample of blood from a vein in your arm.
Lab Analysis
Advanced testing equipment is used in a laboratory to measure the concentration of FSH in the blood sample.
Results
Test results are normally available in one to two days.
What are the symptoms that prompt this test?
FSH is often warranted when the following symptoms arise:
Men
- Low libido
- Reduced muscle mass
- Difficulty achieving or maintaining an erection
- Infertility
Women
- Irregular or missed periods
- Hot flashes and night sweats
- Difficulty conceiving
- Early menopause symptoms
Children
- Delayed onset of puberty
- Early puberty (before age 8 in girls and age 9 in boys)
- Poor growth or development
What are Normal Ranges for This Test?
Men
4 to 15.4 IU/L
Women
Follicular phase – 5 to 12.5 IU/L
Ovulation phase – 7 to 21.5 IU/L
Luteal phase – 7 to 7.7 IU/L
Postmenopausal – 25.8 to 134.8 IU/L
**The above-given reference value is for general guidelines only and should not be considered as a diagnosis. Results may vary from one lab to another due to the method of test used. Your healthcare provider will give you the correct interpretation of the results. **
What Happens if Test Results Show Abnormal Levels?
Abnormal FSH levels can indicate various conditions.
High Levels – May suggest ovarian failure, menopause, polycystic ovary syndrome (PCOS), or testicular failure.
Low Levels – May indicate pituitary gland disorders or hypothalamic dysfunction.
Your doctor may:
- Recommend additional tests such as LH, estrogen, testosterone or prolactin levels
- Order imaging tests like ultrasound or MRI to assess reproductive organs or the pituitary gland.
- Refer you to a fertility specialist or endocrinologist for further evaluation and treatment.
