If your periods are changing and you are waking up drenched in sweat or feeling unlike yourself, it is natural to want a test that gives a clear answer. Many women ask for an FSH or AMH test, or buy a home urine kit. The honest answer is that there is no single blood test that can reliably tell you that you are in perimenopause.
That does not mean tests are useless. Some help in particular situations, and others are very useful for ruling out conditions that can feel like perimenopause. This guide explains which is which.
Why hormone tests are unreliable in perimenopause
In perimenopause, the ovaries do not wind down in a neat straight line. Oestrogen and progesterone rise and fall unpredictably, sometimes from one day to the next, and follicle-stimulating hormone (FSH) swings up and down with them. A blood test only shows your levels at the moment the sample was taken.
So a "normal" result on Monday does not rule out perimenopause, and a raised result one month may be back in the normal range the next. The Australasian Menopause Society points out that FSH and oestradiol levels can fluctuate daily, which is why these tests are generally not useful or necessary for diagnosing menopause.
What the guidelines say
The UK's National Institute for Health and Care Excellence (NICE), in its menopause guideline NG23, gives clear advice that many specialists around the world follow:
| Your age | What NICE recommends |
|---|---|
| 45 and over, otherwise healthy, with typical symptoms | Perimenopause can be identified without laboratory tests if you have recently started having hot flushes or night sweats along with changes in your cycle. Menopause can be identified if you have had no period for 12 months and are not using hormonal contraception. |
| 40 to 45 | An FSH blood test may be considered to help confirm menopause if you have symptoms, including a change in your cycle. |
| Under 40 | An FSH test may be considered if menopause is suspected. Menopause before 40 (premature ovarian insufficiency) needs specialist assessment. |
NICE also advises that for people aged 45 and over, the following should not be used to identify perimenopause or menopause: anti-Müllerian hormone (AMH), inhibin A, inhibin B, oestradiol, antral follicle count and ovarian volume. And an FSH test should not be used to identify menopause in women taking combined hormonal contraception or high-dose progestogen, because these medicines affect the result.
The Indian Menopause Society's guidelines similarly reserve FSH and oestradiol tests for particular situations, such as suspected premature ovarian insufficiency, women on contraceptive pills, after a hysterectomy, or when there is doubt about the cause of missed periods or hot flushes.
FSH, AMH and home urine tests explained
FSH blood test
FSH rises as the ovaries become less responsive, so a high level can support a diagnosis of menopause, especially in younger women. But in perimenopause it moves up and down, so a single result can be misleading. It is most useful under 45, and sometimes needs to be repeated.
AMH test
AMH reflects the number of eggs left in the ovaries and is widely used in fertility clinics. It falls with age, but NICE advises against using it to identify perimenopause or menopause in women aged 45 and over. A low AMH result on its own does not tell you that you are in perimenopause.
Home menopause urine tests
Home kits test your urine for FSH. The US Food and Drug Administration (FDA) explains that they only show whether FSH is raised at the time of testing; they do not detect menopause or perimenopause. Results can be affected by whether you use first-morning urine, how much water you have drunk, and hormonal contraception or HRT. A negative result does not rule out perimenopause, and the FDA advises not to stop contraception based on a home test.
Tests that can be genuinely useful
Several common conditions cause symptoms that overlap with perimenopause, such as tiredness, low mood, hair thinning, palpitations, weight changes or heavy periods. The Australasian Menopause Society notes that depression, anaemia and an underactive thyroid are the most common conditions that can mimic menopause. Depending on your symptoms and history, your doctor may suggest:
- Thyroid function (TSH) – an underactive or overactive thyroid can cause tiredness, weight change, mood changes, palpitations and period changes.
- Complete blood count and ferritin (iron stores) – heavy periods in perimenopause can lead to anaemia and low iron, which cause exhaustion, breathlessness and hair loss.
- Vitamin D – may be checked when bone health is a concern, for example to look for other causes of thinning bones.
- HbA1c or fasting blood sugar – to check for diabetes or pre-diabetes, which becomes more common in midlife.
- Lipid profile (cholesterol) – heart health becomes more important after menopause, and this is a good time to know your numbers.
The Indian Menopause Society includes a complete blood count, blood sugar or HbA1c, lipid profile and TSH among the tests recommended for women at midlife, chosen according to each woman's history and examination. Your doctor may also talk to you about breast screening, cervical screening or a bone density scan, depending on your age and risk factors.
These tests do not diagnose perimenopause. They help make sure nothing else is being missed, and they give a picture of your long-term health. Your doctor will tell you which, if any, are worth doing for you, and they can usually be done at an accredited lab near you.
Start with your symptoms, not a blood test
Because perimenopause is recognised mainly from symptoms and your cycle pattern, the most useful first step is a clear record of what you are experiencing. NuHer's free menopause symptom test takes a few minutes and helps you see your symptoms in one place, so you can bring it to a consultation. You can also read our perimenopause guide and the A–Z of menopause symptoms.
If you would like to talk it through, our gynaecologists and menopause specialists can see you at our Nariman Point clinic or by video consultation across India. Learn more about perimenopause care at NuHer.
When to see a doctor promptly
- Very heavy bleeding, bleeding between periods or after sex
- Any bleeding after your periods have stopped for 12 months
- Symptoms of menopause before the age of 40
- Low mood that does not lift, or thoughts of harming yourself
Questions women ask
Is there a blood test for perimenopause?
Not a reliable one. Hormone levels fluctuate so much in perimenopause that a single test can be normal even when you are clearly in it. If you are 45 or over with typical symptoms, NICE says no test is needed.
What FSH level means menopause?
There is no single cut-off that confirms perimenopause, because FSH goes up and down. A raised FSH can support a diagnosis of menopause in women aged 40 to 45 or under 40, but your doctor will interpret it alongside your symptoms, age and cycle, and may repeat it.
Should I get an AMH test to see if I'm in perimenopause?
Generally no. NICE advises against using AMH to identify perimenopause or menopause in women aged 45 and over. AMH is mainly a fertility test.
Are home menopause tests accurate?
They can detect a raised FSH level in urine, but they cannot tell you whether you are in perimenopause or menopause, and they should never be used to decide whether to stop contraception.
I'm on the pill. Can I be tested?
Combined hormonal contraception affects FSH levels, so an FSH test is not useful while you are taking it. Your doctor can advise on how to tell whether you have reached menopause.
References
- National Institute for Health and Care Excellence (NICE). Menopause: identification and management (NG23). Published 2015, last updated 2026. https://www.nice.org.uk/guidance/ng23
- Australasian Menopause Society. Diagnosing menopause (information sheet). 2016. https://menopause.org.au/images/stories/infosheets/docs/AMS_Diagnosing_menopause.pdf
- US Food and Drug Administration. Menopause (home use tests). https://www.fda.gov/medical-devices/home-use-tests/menopause
- Meeta M, Digumarti L, Agarwal N, Vaze N, Shah R, Malik S. Clinical practice guidelines on menopause: an executive summary and recommendations. Indian Menopause Society 2019–2020. J Midlife Health. 2020;11(2):55–95. https://pmc.ncbi.nlm.nih.gov/articles/PMC7688016/
