Perimenopause is usually a clinical diagnosis
For most women over 45, perimenopause is diagnosed from the clinical picture: your age, how your periods have changed, and the pattern of symptoms — hot flushes, night sweats, disturbed sleep, mood changes, fatigue and more. Australian and international guidance supports making the diagnosis this way, without hormone testing, when the picture is typical. A careful conversation with a doctor is, quite literally, the main test.
Why hormone blood tests have limits
The reason is the nature of perimenopause itself: hormone levels fluctuate from week to week and even day to day. Oestrogen and FSH (follicle-stimulating hormone) can look “normal” one week and markedly changed the next — so a single normal result doesn’t rule perimenopause out, and a single abnormal one doesn’t say much on its own. Hormonal contraception can also affect the results. This is why home or pharmacy “menopause test kits”, which typically measure FSH, can’t reliably tell you where you are in the transition.
When hormone tests are useful
There are situations where blood tests genuinely help. If you’re under 45 — and especially under 40, where premature ovarian insufficiency needs to be considered — hormone testing forms part of the assessment. Testing may also be considered when periods can’t be used as a guide, for example after a hysterectomy or with a hormonal IUD, or when the overall picture is unclear and other conditions need to be distinguished. Even then, results are interpreted alongside your history rather than read in isolation, and testing is often repeated — a single reading can mislead.
What a GP may actually check
When a doctor does order tests at this stage of life, it’s usually not to “prove” perimenopause — it’s to look for other conditions that can mimic or travel with it, and to take stock of your general health. Depending on your history, that may include thyroid function, iron levels, blood sugar and cholesterol, and blood pressure, along with any tests your specific symptoms suggest. It’s also a natural moment to make sure routine screening is up to date.
What to bring to an appointment
The most useful things you can bring are your own observations: notes on your cycle over recent months, a list of symptoms and when they started, current medications, and any recent blood test results. A structured score helps too — the 2-minute symptom check on this site uses the validated Menopause Rating Scale and prints a summary you can take along. From there, if perimenopause is the story your history tells, the conversation can move to what actually matters: your treatment options.
At Lumara, Dr Nirusha Weultjes (FRACGP) sees patients in Wollongong for 45-minute initial consultations, with follow-ups in person or by telehealth. No referral is needed and Medicare rebates apply — see consultation fees, or call (02) 4288 2524.
This page is general health information only. It is not medical advice, and it can’t account for your personal circumstances — please speak with a doctor about what’s right for you.