Lab test
FSH Level Test Follicle-Stimulating Hormone
This blood test measures follicle-stimulating hormone (FSH), a hormone released by the pituitary gland.
- Typical price
- From $49
- Results
- 1-3 business days
- Preparation
- See preparation notes below
- Sample
- Blood draw or sample collection at a local center
About this test
This blood test measures follicle-stimulating hormone (FSH), a hormone released by the pituitary gland. In women, FSH helps control the menstrual cycle and the maturation of eggs; in men, it supports sperm production. FSH is often interpreted together with luteinizing hormone (LH), because the two work as a pair to regulate the reproductive system. The test is ordered to investigate irregular or absent periods, fertility concerns, suspected pituitary problems, and symptoms of menopause or low testosterone. Results depend on sex, age, and, in women, the phase of the menstrual cycle, so these details guide interpretation.
What this test measures
- Follicle-Stimulating Hormone (FSH) A pituitary hormone that drives egg maturation in women and sperm production in men.
Who this test may be right for
- Women with irregular, absent, or difficult menstrual cycles
- Individuals exploring possible causes of infertility
- Men being evaluated for low sperm production or low testosterone
- People with suspected pituitary or hypothalamic concerns
- Women assessing menopausal status
Before your visit
- Cycle timing matters in women; confirm the preferred collection day with your provider
- Report hormone medications or fertility treatments to the laboratory
- Follow any additional instructions that come with your order
Understanding your results
FSH is compared against sex- and age-specific reference ranges, and in women the cycle phase is considered. A high FSH in women can suggest reduced ovarian function, while a low value may point toward pituitary or hypothalamic causes; in men, abnormal FSH can relate to sperm production issues. Because FSH acts together with LH and other hormones, a healthcare provider should interpret the result as part of the wider hormone picture.
Order this test online
- Buy online in a few minutes - no doctor's visit needed for most tests.
- Sample collection at a patient service center near you.
- Results are typically ready within 1-3 business days.
- Secure, lab-reviewed results delivered to your account.
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Questions people ask
Should FSH be tested with LH?
FSH and LH are often measured together because they act as a pair in regulating the reproductive system, and the combination gives more context than either alone.
What can a high FSH level mean in women?
A high FSH can be associated with reduced ovarian function or menopause, though a healthcare provider interprets it with estradiol, age, and symptoms.
Why would a man have an FSH test?
In men, FSH helps support sperm production, so it may be measured when fertility or testicular function is being evaluated.
Does the day of my cycle affect FSH?
Yes. FSH varies across the menstrual cycle, so the collection day is recorded and considered when results are assessed.
What does the FSH Level Test Follicle-Stimulating Hormone measure?
This blood test measures Follicle-Stimulating Hormone (FSH) levels.
Do I need to fast before this test?
Follow the lab's instructions.
How long do results take?
Most FSH Level Test Follicle-Stimulating Hormone results are released in 1-3 business days. Specialty testing can take longer.
Is this test right for me?
This page is educational and not medical advice. Talk to a licensed healthcare provider about which tests fit your situation.
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