The hormone panel worth asking for.

Let me start with the sentence that surprises most women: perimenopause is a clinical diagnosis. It is made on your symptoms, your age and your cycle history, not on a blood test. No single result rules it in or out, because the defining feature of the transition is fluctuation, and a blood draw is a photograph of one morning.

Oestradiol can swing from menopausal lows to some of the highest levels of your reproductive life within a single perimenopausal cycle. FSH rises and falls with it. This is why a woman with textbook symptoms can be told her hormones are normal: that morning, they were. The test was honest. The conclusion drawn from it, that nothing is happening, was not.

“A normal result does not mean nothing is happening. It means that morning's blood said so.”

So why test at all. Two reasons. First, to rule out the conditions that impersonate perimenopause. Second, to set baselines for the things that genuinely change through it and matter for the decades ahead. That is the panel worth asking for, and you will notice the hormones themselves are mostly not on it. I will come to why.

The impersonators first. Thyroid, starting with TSH: if it comes back outside the range, free T4 follows, and thyroid antibodies are worth a conversation if autoimmune disease runs in your family. An underactive thyroid produces fatigue, weight change, low mood, dry skin and thinning hair, and it peaks in exactly this decade of a woman's life. Ferritin, because iron stores drained by heavier cycles produce exhaustion and hair shedding that get blamed on hormones, and ask for the number rather than the word normal. Vitamin B12, commonly low and miserable to be short of. Vitamin D, which is not always rebated, so ask before the blood is drawn rather than after.

Then the baselines. HbA1c, because insulin sensitivity shifts as oestrogen falls, and a rising number caught early is a food-and-movement conversation rather than a diagnosis. A lipid panel, because the protective pattern oestrogen maintained begins to change through the transition. And blood pressure, taken properly: seated, rested, after five minutes of quiet.

The hormones themselves, and this is where the honest answer differs from most of the internet. If you are over 45 with typical symptoms, the Australasian Menopause Society is explicit that FSH, LH, oestradiol, AMH and testosterone should not be measured, because the result will not change what anyone does. That is not your doctor dismissing you. It is your doctor following the guideline, and the reasoning is the fluctuation I described above: a single reading of a wildly moving line tells you very little, whichever day of the cycle it is drawn.

Under 45, the answer changes. FSH testing is indicated below 40, and between 40 and 45 with menopausal symptoms, because at those ages the result genuinely alters management. And if your picture is atypical, bleeding that has changed dramatically, symptoms that do not fit, a history that complicates things, testing may well be warranted. That is a judgement for the person who can see all of you. So the useful move is not to arrive demanding hormones. It is to rule out the impersonators, describe the pattern precisely, and have the conversation about what to do rather than what to measure.

How to make the appointment work. Book a long one, because this does not fit the standard slot. Bring three months of notes: cycle dates, sleep, flushes, mood, the pattern of it. Ask for copies of every result and keep your own file, because you will move practitioners more often than your records will follow you. And if you are waved off with 'you're too young for that' or 'it's just stress' before the impersonators have been checked, that is not care. You are allowed to find a practitioner who takes the decade seriously. They exist, and the difference is not small.

Davina Hearne, Naturopath (Diploma, NZ) · Founder, Valentia

Educational only. Always speak to your healthcare provider about your symptoms and before starting a new supplement.