FSH (follicle stimulating hormone) is a blood test that measures the pituitary signal driving follicle development in the ovaries and sperm production in the testes. Practitioners use it to place cycle changes in context, support the perimenopause conversation, and see whether low sex hormones start in the gonads or the pituitary. Cycle day, hormonal contraception and pregnancy change the result, so record them.
| Test type | Measured in a blood sample |
|---|---|
| Measurements required | FSH only |
| Sample and collection | Blood draw at a collection centre, timed to the cycle (day 2 to 5) if the client is cycling |
| Preparation | If you have periods, book your test for day 2 to 5 of your cycle. Day 1 is the first day of full bleeding. |
| Turnaround | About 3 to 5 business days |
| Available through | Hormone Studies. Available in: Female Hormone Health Test, Perimenopause Test, Menopause Test. |
| Pricing | Price on sign-up |
| Results | Returned in the Vively practitioner platform, beside your client's other markers |
What are the FSH reference and optimal ranges?
| Typical lab reference | Vively optimal | |
|---|---|---|
| Women, day 2 to 5 of cycle | 2 to 10 IU/L | No separate optimal range |
| Women, post-menopause | 20 to 135 IU/L | No separate optimal range |
| Men | 1.5 to 12.5 IU/L | No separate optimal range |
Labs differ, so read the result against the range printed on the client's report (RCPA guidance). FSH ranges are phase-specific: record the cycle day, contraception and menopausal status.
Check a client's FSH result
Enter the value from your client's lab report to see where it sits against the typical lab range and the Vively optimal range.
A guide only, not a diagnosis. One result is a starting point: read it with symptoms, history and a repeat test. Labs differ, so check the result against the range on your client's report. Nothing you enter is stored or sent.
How do you arrange FSH testing through Vively?
- Get verified. Practitioners with a recognised qualification or membership (ATMS, NHAA, ANTA, Dietitians Australia, NSA, CMA or Ahpra registration) can request free practitioner access.
- Choose a panel. Log in to the practitioner platform and pick a panel that includes FSH, or build your own. Add-on pricing shows when you sign up.
- Client collects. Your client collects at a partner collection centre, with their request on their phone or printed.
- Review results. Results come back to you in the practitioner platform, beside your client's other markers, ready for the follow-up consult.
Which Vively panels include FSH?
Log in to the practitioner platform to view a panel in full, or build and save your own from 100+ tests and panels.
- Female Hormone Health Test17 markers · HormonesPrice on sign-up
Two blood tests timed to the cycle, to show how hormones shift across it.
Log in to view this panel - Perimenopause Test17 markers · HormonesPrice on sign-up
Two blood tests timed to the cycle: Day 2 to 5 (ideally Day 3), then around Day 21 or 7 days before the next period.
Log in to view this panel - Log in to view this panelMenopause Test17 markers · HormonesPrice on sign-up
How do you read FSH without an optimal range?
FSH has no separate optimal range: read it as a feedback signal against LH, oestradiol, cycle day and the trend.
FSH rises when the ovaries or testes respond less, and falls when the hypothalamus or pituitary is suppressed.
FSH can swing between follicular and post-menopausal levels from one cycle to the next, which is why NICE menopause guidance (NG23) advises against using it to diagnose menopause in women over 45 with typical symptoms.
A raised day 2 to 5 FSH with low oestradiol in a woman under 40. In a man with low testosterone, FSH and LH separate testicular from pituitary causes (Endocrine Society of Australia, 2016).
What should FSH be read with?
- HighRaised FSH, low oestradiol, cycles changing in the 40s
Fits the menopause transition; read it with symptoms and cycle history, as repeat values will vary.
- HighRaised FSH on two samples, under 40, cycles stopped
Possible premature ovarian insufficiency (ESHRE: FSH above 25 IU/L on two samples 4 weeks apart); needs GP review.
- LowLow-normal FSH, LH well above FSH, raised free testosterone
Often seen with PCOS, though the 2023 international guideline does not use LH or FSH for diagnosis.
- LowLow FSH and LH, low oestradiol, missed periods
Possible hypothalamic suppression from under-eating, heavy training, weight loss or stress.
- ContextMen: high FSH and LH with low testosterone
Points towards a testicular cause; normal or low FSH and LH with low testosterone points towards the pituitary or exogenous androgens.
What can affect a FSH result?
- Cycle day: a mid-cycle sample can catch the FSH and LH surge and read high
- The combined pill, depot progestogen and pregnancy suppress FSH
- Testosterone therapy and anabolic steroids suppress FSH, often for months after stopping
- Under-eating, rapid weight loss, intense training and significant illness can lower FSH
- High-dose biotin can interfere with some FSH immunoassays
When should you refer the client to their GP?
- FSH in the post-menopausal range in a woman under 40, or under 45 with cycles stopping
- No periods for 3 months or more (outside pregnancy, contraception or breastfeeding) with low FSH and LH
- Men with low testosterone and raised, or inappropriately normal, FSH and LH
- Abnormal FSH with headaches, visual change or milky nipple discharge
How should a client prepare for a FSH test?
Copy or print this to send to your client.
Preparing for your FSH test
- If you have periods, book your test for day 2 to 5 of your cycle. Day 1 is the first day of full bleeding.
- If you are post-menopause, you can test on any day.
- Men: any day is fine. Book a morning collection so it can be taken with your testosterone sample.
- Tell your practitioner if you take the combined oral contraceptive pill, as it lowers FSH and your result will reflect the pill.
- Take your pathology request to any of 4,000+ collection centres. Bring it printed or on your phone.
- Keep taking prescribed medicines as usual unless your doctor tells you otherwise.
- Results usually take about 3 to 5 business days and come to your practitioner. Book your results appointment for after that.
How do practitioners use FSH with clients?
Get the cycle day, contraception and menopausal status before reading FSH; without them the number cannot be placed. For perimenopausal clients, symptoms and cycle pattern carry more weight than a single FSH, so treat it as supporting evidence for the conversation with their GP.
FSH FAQs
Can a naturopath, nutritionist or dietitian order an FSH test through Vively?
Yes. Add it to any client panel on the Vively practitioner platform. It sits in Hormone Studies and is also in Female Hormone Health Test, Perimenopause Test and Menopause Test. Add-on pricing shows when you sign up. No account yet? Request free access.
Can FSH confirm perimenopause?
No, a single FSH cannot confirm or rule out perimenopause. FSH can sit in the post-menopausal range one month and the follicular range the next. For women over 45 with typical symptoms, NICE advises diagnosing on symptoms and cycle pattern. A raised FSH carries more weight in women under 45, or where the GP wants support for a treatment decision.
Should I test FSH in a client on the combined pill?
Usually not. The combined pill suppresses FSH and LH, so the result says little about ovarian function or menopausal status. If those are the questions, the client's GP can advise whether and when a break from the pill is appropriate before testing. Never suggest stopping contraception without that conversation.
Why can FSH look normal in a perimenopausal client?
FSH swings between follicular and post-menopausal levels from one cycle to the next, so a normal value does not exclude perimenopause. A high early-follicular oestradiol can also suppress FSH and make it look falsely reassuring. NICE guidance (NG23) advises against using FSH to diagnose menopause in women over 45 with typical symptoms.
How do FSH and LH together help in a male client with low testosterone?
The pair separates the cause. High FSH and LH with low testosterone points towards a testicular cause, while low or inappropriately normal FSH and LH points towards the pituitary or external androgens. Testosterone therapy and anabolic steroids can suppress FSH for months after stopping. Either pattern needs GP review.
References
- Royal College of Pathologists of Australasia. RCPA Manual: Follicle stimulating hormone (FSH).
- National Institute for Health and Care Excellence. Menopause: diagnosis and management (NG23). 2015, updated 2024. Source
- ESHRE Guideline Group on POI. ESHRE guideline: management of women with premature ovarian insufficiency. Human Reproduction. 2016. Source
- Teede HJ, Tay CT, Laven J, et al. Recommendations from the 2023 international evidence-based guideline for the assessment and management of polycystic ovary syndrome. 2023.
- Yeap BB, Grossmann M, McLachlan RI, et al. Endocrine Society of Australia position statement on male hypogonadism (part 1). Medical Journal of Australia. 2016. Source
- National Institute for Health and Care Excellence. Menopause: diagnosis and management (NG23).