Most women arrive at this conversation having already been told their bloodwork is normal. They are sleeping badly, their mood has changed in a way that does not feel like them, their periods have become unpredictable, and something is clearly different — but the tests came back fine, so the matter was closed.
Both things are usually true. The bloodwork often is normal. And something is genuinely happening.
Perimenopause is not low hormones. It is erratic ones.
This is the single most useful thing to understand, and it explains nearly everything else.
Menopause is a destination — the point twelve months after a final period, when ovarian hormone production has settled at a low baseline. Perimenopause is the transition leading there, and it is not a gradual decline. It is volatility.
During perimenopause, estrogen does not simply fall. It swings, sometimes to levels higher than in your thirties, then drops sharply, then rises again. Progesterone, meanwhile, tends to decline earlier and more steadily, because cycles increasingly occur without ovulation and progesterone is produced after ovulation.
So the hormonal picture is an unpredictable estrogen against a falling progesterone. The symptoms people experience are largely the symptoms of that instability, not of deficiency. This is why perimenopause can feel worse than menopause itself for some women.
Why a single blood test often misses it
If hormone levels are swinging week to week, a blood draw captures one moment in that swing. Drawn on a high day, your estrogen looks fine. Drawn on a different day, it might look low. Neither result describes what you are living through.
The same applies to FSH, which is often used to assess menopausal status. In perimenopause, FSH fluctuates alongside everything else. A normal FSH does not rule perimenopause out, and a single raised FSH does not confirm menopause.
This is not a failure of the lab. It is a mismatch between a test designed to capture a stable state and a physiology that is anything but. Perimenopause is primarily a clinical diagnosis — made from your symptoms, your cycle pattern, your age and your history. Bloodwork supports that picture and rules out the conditions that mimic it. It does not replace the conversation.
When it starts, and how long it lasts
Earlier and longer than most people expect. It commonly begins in the early-to-mid forties, and it is not unusual for it to begin in the late thirties. The transition typically runs four to eight years, and for some women closer to ten.
That means a woman can spend most of a decade in perimenopause while still having periods — which is exactly why it gets missed. Regular periods are frequently taken as evidence that hormones are fine. They are not.
The symptoms that get missed
Hot flushes and night sweats are recognized. The rest often are not, and they are frequently what bothers women most.
Sleep that breaks at three in the morning for no apparent reason. Anxiety that is new, or disproportionate, or has a physical quality to it. A short fuse that does not match your temperament. Difficulty finding words, or holding a thought — the brain fog that many women quietly find frightening. Joint aches that arrive without injury. Heart palpitations. Shifting body composition despite no change in diet or activity. Vaginal dryness and discomfort with sex, which women very often do not raise unless asked directly. Headaches or migraines that have changed pattern. A loss of motivation or interest that resembles depression but does not quite behave like it.
Any of these in isolation can be explained away. Together, in a woman in her forties, they form a recognisable picture.
What gets assessed
The first job is to rule out what else produces these symptoms, because several conditions overlap almost exactly and are entirely treatable on their own terms.
Thyroid dysfunction is the most common, and a full panel matters here rather than TSH alone. Iron deficiency, which can cause fatigue, breathlessness and poor concentration well before anemia shows. Vitamin D and B12. Blood sugar and insulin. And a genuine conversation about mood, because depression and anxiety can coexist with perimenopause and treating only the hormones is not adequate care.
Only once that groundwork is done does it make sense to discuss hormone therapy.
What treatment can involve
Hormone therapy is not the only option, and it is not right for every woman. Where it is appropriate, the usual approach is to replace what is falling and stabilize what is swinging — commonly estrogen, and progesterone for women who still have a uterus, both of which are required for safety as well as symptom control.
Treatment is individualized. Dose, route and combination depend on your symptoms, your medical and family history, and what you are trying to achieve. Vaginal symptoms specifically often respond to local treatment that works differently from systemic therapy.
There are women for whom hormone therapy is not suitable, and that assessment is part of a proper consultation. Where it is not an option, there are other routes worth discussing — for sleep, for mood, for vasomotor symptoms, and for bone and cardiovascular health.
What matters is that the decision is made with someone who can order the right tests, interpret them in context, prescribe, and follow up as things change. Perimenopause is not a single appointment. Doses are adjusted, symptoms shift, and the plan should move with you.
Booking a hormone consultation
At Juvenescence Wellness, hormone assessment and treatment are provided by Stephanie Eschak, Nurse Practitioner, whose scope in British Columbia covers ordering and interpreting the bloodwork, prescribing, and ongoing monitoring — so the whole process stays with one clinician rather than being split across referrals.
Hormone therapy consultations cannot be booked online. Please call 250·932·6171 to arrange one. Patients travel from across the Cowichan Valley, Duncan, Nanaimo, Victoria and Ladysmith.
If you have been told your bloodwork is normal and you still do not feel like yourself, that is worth a longer conversation than a single test result allows.
Written by Stephanie Eschak, Nurse Practitioner, at Juvenescence Wellness in Lake Cowichan, BC. This article is general information, not medical advice for your individual situation. Book a consultation or call 250·932·6171.