Menopause Blood Test: What to Test, What Results Mean, and When You Actually Need One
If you suspect you’re going through perimenopause or menopause, a blood test might seem like the obvious first step. But the relationship between blood tests and menopause is more nuanced than most people expect. Some tests are genuinely useful. Others can be misleading if interpreted in isolation.
This guide explains which blood tests matter, what the results mean, and when a blood test is — and isn’t — the right starting point. Written by the clinical team at The Lagom Clinic’s menopause clinic in Bristol.
Can a Blood Test Confirm Menopause?
The short answer: not reliably on its own.
The hormone most commonly tested is FSH (follicle-stimulating hormone). FSH rises as oestrogen falls, so an elevated FSH can suggest menopause is approaching. But here’s the problem: during perimenopause, FSH fluctuates significantly — sometimes within the same week. You could test “normal” on a Monday and “menopausal” on a Thursday.
For this reason, NICE guidelines recommend that perimenopause and menopause in women over 45 should be diagnosed based on symptoms, not blood tests alone. A GP who knows the symptoms and asks the right questions is more reliable than a single hormone level.
Blood tests become more useful in specific situations — see below.
When a Menopause Blood Test IS Useful
1. Ruling out other conditions
Many perimenopause symptoms overlap with other conditions. Fatigue could be thyroid dysfunction or iron deficiency. Mood changes could be related to vitamin D or B12. Weight gain could involve metabolic or thyroid issues. A blood panel helps rule these out — or catch them alongside hormonal changes.
2. Investigating early menopause (under 40)
If you’re under 40 and experiencing menopausal symptoms, blood tests are essential. NICE recommends checking FSH on two occasions, 4-6 weeks apart, to help confirm premature ovarian insufficiency (POI). Early diagnosis matters because it affects bone health, cardiovascular risk, and fertility options.
3. Establishing a baseline before HRT
Before starting hormone replacement therapy, it’s good practice to check your baseline hormone levels, liver function, thyroid, and general health markers. This helps your GP prescribe the right type and dose of HRT, and gives a reference point for future monitoring.
4. Monitoring over time
A single snapshot is limited. Two or three tests over several months — combined with a symptom diary — give a much clearer picture of where you are in the transition.
Which Blood Tests Are Included in a Menopause Panel?
At The Lagom Clinic, our perimenopause and menopause blood panel typically includes:
| Test | What it measures | Why it matters |
|---|---|---|
| FSH | Follicle-stimulating hormone | Rising FSH suggests declining ovarian function — but fluctuates during perimenopause |
| LH | Luteinising hormone | Works alongside FSH; the FSH:LH ratio can be informative |
| Oestradiol | The main form of oestrogen | Declining levels correlate with symptoms; useful baseline before HRT |
| Testosterone | Total and/or free testosterone | Low testosterone contributes to fatigue, low libido, and reduced motivation — often overlooked |
| Thyroid (TSH, FT4) | Thyroid function | Hypothyroidism mimics many perimenopause symptoms (fatigue, weight gain, brain fog, mood changes) |
| Full blood count | Red cells, white cells, haemoglobin, platelets | Screens for anaemia (heavy periods can cause iron-deficiency anaemia) |
| Ferritin | Iron stores | Low ferritin causes fatigue even when haemoglobin is “normal” |
| Vitamin D | 25-hydroxyvitamin D | Deficiency is common in the UK and worsens bone health, mood, and energy |
| HbA1c | Average blood sugar over 3 months | Metabolic changes during menopause increase diabetes risk |
| Lipid profile | Cholesterol, triglycerides, HDL, LDL | Cardiovascular risk increases after menopause; good to establish a baseline |
This is broader than the FSH-only test many women are offered through the NHS. The wider panel catches conditions that are commonly missed or attributed incorrectly to “just menopause.”
What Do Menopause Blood Test Results Mean?
FSH levels
- Below 10 IU/L — typically premenopausal (but doesn’t rule out early perimenopause)
- 10-25 IU/L — may indicate perimenopause, especially if symptoms are present
- Above 25-30 IU/L — consistent with late perimenopause or menopause (when sustained)
Remember: a single FSH reading is a snapshot, not a diagnosis. Levels can swing 20+ points between tests during perimenopause.
Oestradiol levels
- Above 200 pmol/L — typically premenopausal range
- 100-200 pmol/L — may be perimenopausal
- Below 100 pmol/L — consistent with menopause (when sustained)
Other results
Thyroid, ferritin, vitamin D, HbA1c, and lipids all have their own reference ranges. Your GP should interpret these in context — not just flag “normal” or “abnormal” — and explain what each result means for you specifically.
How Much Does a Private Menopause Blood Test Cost?
At The Lagom Clinic in Bristol:
- Blood test (phlebotomy + specific tests): from £60 + cost of individual tests requested
- Menopause consultation (30 minutes): £125 — includes symptom review, examination if needed, and discussion of results and next steps
Many patients book a consultation first, and we arrange the blood tests during or after the appointment. Results are typically available within 3-5 working days, reviewed by your GP with a clear explanation — not just a printout.
For comparison, standalone private blood test services often charge £100-300 for a “menopause panel” but don’t include a GP consultation to interpret the results. At The Lagom Clinic, the clinical interpretation is the point — the numbers are only useful in context.
FAQs
Can my NHS GP do a menopause blood test?
Yes, though some NHS GPs are reluctant to test in women over 45 because NICE says diagnosis should be symptom-based. If you’re under 40, your NHS GP should test FSH. If you want a broader panel (thyroid, testosterone, ferritin, metabolic markers), a private GP can arrange this without a wait.
Do I need to fast before a menopause blood test?
Fasting isn’t required for hormone tests (FSH, LH, oestradiol, testosterone). However, if the panel includes HbA1c or lipids, fasting for 8-12 hours beforehand gives more accurate results. Your GP will advise when you book.
When in my cycle should I have the test?
If you’re still having periods, day 2-5 of your cycle is ideal for FSH and oestradiol (the early follicular phase gives the most interpretable baseline). If your periods are irregular or absent, test any time — waiting for a “perfect” cycle day often just delays the conversation.
What if my results come back “normal” but I still feel awful?
This is common. “Normal” blood results don’t mean your symptoms aren’t real. Perimenopause is diagnosed primarily on symptoms, not blood values. If your symptoms are consistent with perimenopause, treatment options (including HRT) can still be discussed — even if your FSH is within range.
Can I get a perimenopause blood test if I’m on the contraceptive pill?
Hormonal contraception affects FSH and oestradiol results, making them unreliable for perimenopause assessment. Your GP may recommend a trial period off hormonal contraception before testing, or may assess based on symptoms and age instead. This should be discussed on an individual basis.
Book a Menopause or Perimenopause Blood Test in Bristol
At The Lagom Clinic, we run menopause and perimenopause blood panels with GP interpretation included. No referral needed. Results reviewed in a dedicated consultation — not a 5-minute callback.
Book online, call 0117 987 2075, or email info@thelagom.co.uk.
The Lagom Clinic, 4 Redland Court Road, Redland, Bristol, BS6 7EE.
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