Follicle-Stimulating Hormone (FSH)
The pituitary signal that drives the ovaries and testes, central to fertility and menopause questions.
Consider this test if:
- Irregular, absent, or changing menstrual cycles, or symptoms suggesting perimenopause or early menopause
- Working up fertility and need to define cycle phase or assess ovarian reserve
- Low testosterone, low libido, or infertility in men and sorting a pituitary cause from a testicular one
- Confirming menopausal status alongside symptoms
- Tracking pituitary or gonadal function over time
- HSA/FSA eligible
- Typical results in 1 day · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you ·
Pre-test considerations
No fasting required. For cycling women, timing matters: FSH is usually drawn early in the cycle (around day 3) for fertility and ovarian-reserve evaluation, so note your cycle day. Hormonal contraceptives, hormone therapy, and recent fertility medications affect the result; note anything you are taking.
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What this test is for
Follicle-stimulating hormone (FSH) is released by the pituitary gland to drive egg development in women and sperm production in men. Its level helps locate where a reproductive problem sits: high FSH points to the ovaries or testes failing to respond (primary gonadal failure, menopause, Klinefelter syndrome), while low FSH points to a pituitary or hypothalamic cause. In women it is used to evaluate irregular cycles, amenorrhea, and ovarian reserve, and it rises sharply after menopause; in men it helps work up low testosterone, infertility, and testicular dysfunction.
FSH is most informative read alongside LH and the relevant sex hormone (estradiol in women, testosterone in men), since the two gonadotropins move together and the pattern is what distinguishes the cause. If you want both gonadotropins, the combined FSH and LH panel covers them in one draw.
- Specimen
- Serum or plasma
- Measures
- Concentration
What you'll learn
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Insights that connect the dots. A clinician reads your whole picture, not one result in isolation, connecting family history, past results, and lifestyle into clear next steps.
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Your personalized action plan. Nutrition, supplements, and training in one clinician-reviewed protocol, updated as your results change.
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Track your trends. Upload results from any lab and see each biomarker trend over time, so you know what is working.
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Never miss a recheck. Mito tells you what is worth retesting and when, then reminds you so nothing slips.
What to expect
- 1 Book instantly
Click, book, done. Choose a convenient lab location near you. Transparent, up-front pricing.
- 2 Quick lab visit
Testing to fit your busy schedule, usually 15 minutes or less. Walk-in and appointments available.
- 3 Typical results in 1 day
Your results post straight to your dashboard as soon as the lab completes them.
- 4 Expert guidance
Included with Mito membership. A clinician reviews your results and your personalized action plan follows, with clear next steps.
Everything your health needs,
in one membership
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Every test at our cost
Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
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Continuous tracking, all in one place
Upload past labs and watch your trends over time. Every marker and visit lives in one longitudinal record, so all your care stays together.
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Year-round clinician support
Text anytime and get clinician-reviewed answers. When you want to go deeper, 1:1 consultations are available at affordable rates.
All for $9/month
Order any test or consult without joining. For $9/month, members unlock member prices, trend tracking, and year-round clinician guidance.
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$9 /mo
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Without membership
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Frequently asked questions
View all FAQsHow does pricing work?
Every test shows the member price next to the standard non-member price, so you can see what membership saves you. The member price is our cost, covering the lab and what it takes to run the service. It is never a profit on the test itself. Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9 per month, and any applicable lab order or draw fee is itemized before you pay.
Where do I get tested?
Choose an available partner lab at checkout. If your cart contains multiple blood tests, Mito helps consolidate the eligible tests at one lab when possible. At-home kits and scans follow the collection or appointment process shown on their product page.
Is this eligible for HSA/FSA?
Yes. Eligible tests can be paid for with an HSA or FSA card at checkout.
When will I get my results?
Your results appear in your Mito dashboard after the laboratory completes processing. A clinician then reviews them before your analysis and personalized action plan are finalized. Timing varies by test, and specialty assays and at-home kits may take longer.
Do I need a physician's order?
No. Mito provides the laboratory order when one is required, so you do not need to arrange a separate physician visit before purchasing.
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