Perimenopause and menopause tests: what a blood test can confirm
Hormones read with the fluctuation caveat firmly in mind, plus the thyroid and iron checks that catch the things that impersonate the transition.
Perimenopause and menopause panel
A comprehensive panel for the transition years.
Menopause treatment monitoring
Monitoring for women already on menopause treatment. Test-led, doctor-read.
Women's testosterone therapy check
Monitoring for women on prescribed testosterone.
About this stage
This stage covers the transition years and what comes with them. A full panel measures FSH, LH, oestradiol, testosterone with SHBG and prolactin, then adds TSH, iron studies and a full blood count. Separately, for women whose doctor has already prescribed treatment for menopausal symptoms, there is monitoring: oestradiol and FSH with testosterone and SHBG, alongside liver function, lipids, HbA1c and a full blood count. Your prescribing doctor decides which of these markers are relevant and how often.
The questions are almost always the same three, in some order. Am I in perimenopause, or is something else going on. Can a blood test actually confirm it. Why does my GP say testing is not needed when I feel like a different person. Then the follow-ups: what are the early signs at 43 as opposed to 50, how long does this last, and if I am already on treatment, what should be checked and how often.
Testing fits, but not in the way most people expect. In women over 45 with typical symptoms, Australian and international guidance is that hormone testing is not required to identify perimenopause: the diagnosis is clinical, from your age, symptoms and cycle history. Testing earns its place when you are under 45, when symptoms are unusual or severe, when hormonal contraception or a hysterectomy has removed the cycle you would otherwise track, and above all when you want the impersonators ruled out.
There is also the practical side of the transition. Heavy or unpredictable bleeding is common in the years before periods stop, and it drains iron stores quietly, which is why a full blood count and iron studies sit inside the panel rather than being ordered later as an afterthought.
Those impersonators are the honest reason to test. Fatigue, brain fog, low mood, poor sleep, palpitations and weight change are classic transition symptoms, and they are also classic symptoms of an under-active thyroid or low iron. Both are common in women in their forties and both are simple to measure. What testing cannot do is date your final period or diagnose menopause, which is confirmed after twelve months without one. Self-pay, not Medicare-rebated.
Perimenopause symptoms checklist
The signs by age band, from the early forties to the early fifties.
Perimenopause: the signs people miss
It rarely starts with hot flushes. Here is what often comes first.
Perimenopause blood test: what it can and cannot tell you
Why the diagnosis is clinical, and when testing still earns its place.
Perimenopause and menopause tests: what they cost
What a blood test can confirm in Australia, and the price of it.
Oestradiol explained
What the test shows across your cycle and through the transition.
Am I in perimenopause? A 3-minute symptom quiz
Answer a few questions and see which checks are worth discussing.
Choose your test
Pick the panel that matches your question. Each test page lists every marker, the timing, and the price before you order, plus what the result cannot tell you.
A doctor requests it
Upload a request your own GP or specialist has signed, or answer a short questionnaire and have a KnowLuna women's health doctor review it and request the panel.
Collect and understand
Give your sample at an accredited collection centre near you, or choose a home kit or a nurse visit where the test allows it. Plain-English results land in your account, with a doctor to talk them through.
Common questions
Can a blood test confirm perimenopause?
Not on its own. During the transition your ovaries do not wind down smoothly, so FSH and oestradiol swing from one month to the next and a single collection is a snapshot of a moving target. A normal FSH does not rule perimenopause out and a high one does not confirm it. Your doctor weighs the result against your age, symptoms and cycle history.
What are the early signs, and when do they start?
Frequently reported early changes are cycles that shorten or lengthen, heavier or lighter bleeding, disturbed sleep, night sweats, low mood or new anxiety, brain fog, joint aches, headaches, vaginal dryness and reduced libido. Hot flushes often arrive later than people expect. Most women notice changes somewhere in their mid-forties, and some considerably earlier.
Which day should I collect if my cycles are irregular?
Any day, and simply tell us when your last period started so the doctor can read the result in context. If your cycles are still regular, day two to five gives the most interpretable FSH and oestradiol. If you use hormonal contraception, those two mostly reflect the contraception, while thyroid and iron remain informative. Testosterone and SHBG are altered by combined hormonal contraception, so they are best read off it.
I am already on treatment my doctor prescribed. What is monitored?
If your doctor has prescribed treatment for menopausal symptoms, monitoring typically looks at oestradiol and FSH alongside testosterone and SHBG where relevant, plus liver function, lipids, HbA1c and a full blood count as a general health check. Australian guidance does not set a routine blood schedule for this, so your prescribing doctor decides which markers are relevant, how often, and any changes. KnowLuna provides the testing and the plain-English report.
Sources and further reading
- Australasian Menopause Society: Diagnosing menopause (information sheet)
- Australasian Menopause Society: Perimenopause or menopausal transition (information sheet)
- Jean Hailes for Women's Health: menopause
- Healthdirect: perimenopause
General information only, not medical advice. A blood test is one input to a doctor's assessment, not a diagnosis on its own. If your symptoms are severe or sudden, see a doctor promptly. Read our medical disclaimer.
Neither are the things that mimic it.