Menopause is a natural transition that every woman goes through, typically between the ages of 45 and 55 -- but understanding what is actually happening inside your body during this time can be transformative. The right blood tests can distinguish menopause from conditions with overlapping symptoms, establish a baseline before treatment decisions, and give you data to advocate for yourself with confidence.
In the UK, the average age for menopause is 51, with perimenopause -- the transitional phase -- often beginning several years earlier. During this time, fluctuating hormone levels produce symptoms that can be vague, confusing, and frustratingly similar to those caused by thyroid disorders, iron deficiency, or low vitamin D. A comprehensive blood test cuts through the uncertainty.
This guide covers which blood tests are relevant for menopause and perimenopause, what the results mean, when testing is most useful, and how to monitor your health if you are already on HRT.
Key Takeaways
- NICE guidelines (NG23) state that menopause in women aged 45 and over should be diagnosed clinically based on symptoms -- but blood tests are valuable for women under 45, those with ambiguous symptoms, and anyone wanting a fuller health picture.
- FSH alone is not enough. Hormone levels fluctuate considerably during perimenopause. A comprehensive panel including oestradiol, progesterone, testosterone, SHBG, thyroid markers, iron, and vitamin D provides far more actionable insight.
- Symptom overlap is real. Fatigue, brain fog, weight gain, mood changes, and hair thinning are shared across menopause, thyroid dysfunction, iron deficiency, and vitamin D deficiency. Testing rules these out in one go.
- HRT monitoring benefits from periodic blood work -- particularly oestradiol (to check absorption of patches, gels, or sprays), testosterone, and SHBG.
- At-home venous blood testing with a professional phlebotomist makes comprehensive menopause panels accessible without GP referral or clinic visits.
What Does NICE Say About Menopause Blood Tests?
The NICE guideline NG23 on menopause identification and management makes the following recommendations about blood testing:
- Women aged 45 and over with typical menopause symptoms (including changes to their menstrual cycle) should be diagnosed without laboratory tests. The diagnosis is clinical.
- Women aged 40 to 45 with menopausal symptoms -- including a change in their menstrual cycle -- should be offered an FSH blood test to help confirm the diagnosis.
- Women under 40 with suspected premature ovarian insufficiency (POI) should have FSH measured on two occasions, 4 to 6 weeks apart. POI should not be diagnosed on the basis of a single blood test.
- FSH should not be tested in women using combined oestrogen and progestogen contraception or high-dose progestogen, as these medications suppress FSH and make results unreliable.
These guidelines focus on diagnosis. But many women seek blood tests not to diagnose menopause per se, but to understand what is driving their symptoms, to rule out other conditions, to establish a baseline before starting HRT, or to monitor their health during the transition. In those contexts, a broader panel of biomarkers is far more useful than FSH alone.
The Core Menopause Blood Test Panel
A thorough menopause blood test should cover reproductive hormones, thyroid function, and key nutritional markers. Here is what to test and why each biomarker matters.
Reproductive Hormones
| Biomarker | What It Tells You | Menopause Relevance |
|---|---|---|
| FSH | Follicle-stimulating hormone drives egg development. As ovarian reserve declines, the pituitary produces more FSH to compensate. | Persistently elevated FSH (above 25-30 IU/L) suggests the ovaries are no longer responding to stimulation. Post-menopausal levels typically range from 25 to 135 IU/L. |
| LH | Luteinising hormone triggers ovulation. Like FSH, it rises when the ovaries become less responsive. | An elevated LH alongside elevated FSH strengthens the picture of ovarian decline. Assessed together with FSH rather than in isolation. |
| Oestradiol (E2) | The primary oestrogen produced by the ovaries. Essential for bone health, cardiovascular protection, brain function, and skin integrity. | Falling oestradiol is the hallmark of menopause. Testing both oestradiol and FSH together is more informative than either alone. Post-menopausal oestradiol is typically below 100 pmol/L. |
| Progesterone | Produced after ovulation to prepare the uterine lining. A key marker of whether ovulation is still occurring. | Low or absent progesterone (below 5 nmol/L mid-luteal phase) indicates anovulatory cycles, common in perimenopause. Best tested on day 21 of a 28-day cycle, or 7 days after suspected ovulation. |
| Testosterone | Not just a male hormone. Testosterone supports libido, energy, muscle mass, bone density, and cognitive function in women. | Testosterone declines gradually with age, and the effects become more noticeable around menopause. Low testosterone can cause reduced libido, brain fog, fatigue, and loss of muscle mass. The British Menopause Society (BMS) recommends checking total testosterone and SHBG before considering testosterone therapy. |
| SHBG | Sex hormone-binding globulin is a protein that binds to sex hormones. Only unbound (free) hormones are biologically active. | SHBG often rises after menopause and with oral HRT, binding more testosterone and oestradiol. High SHBG can mean that even if total hormone levels look adequate, the amount available to your tissues is actually low -- causing symptoms despite seemingly normal results. |
Thyroid Function
Thyroid disorders are significantly more common in women, and the risk increases with age -- particularly around the menopausal transition. The European Menopause and Andropause Society (EMAS) has highlighted that thyroid disease and menopause share so many symptoms that misdiagnosis is common.
| Biomarker | What It Tells You | Why It Matters at Menopause |
|---|---|---|
| TSH | Thyroid-stimulating hormone is the primary screening marker for thyroid function. | Elevated TSH indicates an underactive thyroid (hypothyroidism), which causes fatigue, weight gain, brain fog, and low mood -- all easily mistaken for menopause. |
| Free T4 | The main thyroid hormone circulating in the blood. Converted to the active form (T3) in tissues. | Low Free T4 with elevated TSH confirms hypothyroidism. Normal TSH with low-normal Free T4 can still cause subclinical symptoms. |
| Free T3 | The active thyroid hormone that drives metabolism at the cellular level. | Some women have normal TSH and Free T4 but poor T4-to-T3 conversion, causing persistent symptoms. Free T3 completes the thyroid picture and is especially relevant for women on thyroid medication. |
Nutritional Markers
| Biomarker | What It Tells You | Menopause Connection |
|---|---|---|
| Vitamin D | Essential for bone health, immune function, and mood regulation. | Declining oestrogen accelerates bone density loss at menopause. Adequate vitamin D (above 75 nmol/L) is critical for calcium absorption and reducing osteoporosis risk. Low vitamin D also causes fatigue, muscle pain, and low mood -- symptoms commonly attributed to menopause. |
| Ferritin | The body's iron storage protein. The most sensitive marker of iron status. | Heavy or irregular periods during perimenopause can deplete iron stores. Low ferritin (below 30 mcg/L) causes exhaustion, breathlessness, hair loss, and poor concentration. Many women are told their fatigue is "just menopause" when iron deficiency is the actual or contributing cause. Ferritin above 50 mcg/L is also needed for optimal thyroid function. |
| Iron / Iron Studies | Serum iron, transferrin, and total iron-binding capacity provide context alongside ferritin. | Useful for distinguishing between iron deficiency anaemia and anaemia of chronic disease, and for monitoring the response to iron supplementation. |
Why Menopause Symptoms Overlap with Other Conditions
One of the biggest challenges for women in their 40s and 50s is that menopause symptoms are not unique to menopause. The table below illustrates how closely the symptoms of menopause, thyroid dysfunction, iron deficiency, and vitamin D deficiency mirror each other.
| Symptom | Menopause | Underactive Thyroid | Iron Deficiency | Low Vitamin D |
|---|---|---|---|---|
| Fatigue / low energy | Yes | Yes | Yes | Yes |
| Brain fog / poor concentration | Yes | Yes | Yes | -- |
| Weight gain | Yes | Yes | -- | -- |
| Low mood / anxiety | Yes | Yes | Yes | Yes |
| Hair thinning / loss | Yes | Yes | Yes | -- |
| Muscle / joint pain | Yes | Yes | -- | Yes |
| Sleep disturbance | Yes | Yes | Yes | -- |
| Heart palpitations | Yes | Yes* | Yes | -- |
| Hot flushes / sweating | Yes | Yes* | -- | -- |
| Reduced libido | Yes | Yes | Yes | -- |
*Hyperthyroidism (overactive thyroid) causes hot flushes, sweating, and palpitations -- symptoms frequently mistaken for menopause.
The clinical implication is straightforward: if you test only FSH and oestradiol, you may confirm that your hormones are changing -- but you will miss a treatable thyroid condition, iron deficiency, or vitamin D deficit that could be responsible for a significant proportion of your symptoms. A comprehensive panel tests everything in parallel, saving time, multiple GP appointments, and weeks of uncertainty.
When Should You Get a Menopause Blood Test?
Blood testing is most useful in the following scenarios:
1. You Are Under 45 with Suspected Perimenopause
NICE recommends FSH testing for women aged 40 to 45 with menopausal symptoms. If you are under 40, blood tests are essential -- premature ovarian insufficiency (POI) affects approximately 1 in 100 women under 40 and 1 in 1,000 under 30. Diagnosis requires elevated FSH on two separate occasions 4 to 6 weeks apart.
2. Your Symptoms Could Have Multiple Causes
If you are experiencing fatigue, brain fog, low mood, or weight changes, these could be caused by menopause, thyroid dysfunction, nutritional deficiencies, or a combination. A comprehensive blood test differentiates between these overlapping conditions in a single step rather than months of trial-and-error GP visits.
3. You Want a Baseline Before Starting HRT
Having pre-treatment hormone levels documented is valuable for comparing how your body responds to HRT. Baseline measurements of oestradiol, testosterone, SHBG, thyroid function, and key nutrients create a reference point for future monitoring.
4. You Are Already on HRT and Want to Check Absorption
Transdermal oestrogen (patches, gels, sprays) absorption varies between individuals. An oestradiol blood test can confirm whether you are achieving adequate levels, which is particularly useful if symptoms persist despite treatment.
5. You Are Over 45 and Want Data, Not Just a Diagnosis
Even though NICE says women over 45 do not need a blood test for diagnosis, many women want more than a clinical label. They want to understand their cardiovascular risk markers, bone health indicators, and nutritional status as they enter a phase of life where oestrogen's protective effects diminish.
Timing Your Test: When in Your Cycle to Test
If you are still having periods (even irregular ones), timing matters for certain biomarkers:
- FSH, LH, oestradiol: Best tested on day 2 to 5 of your menstrual cycle (the early follicular phase), when baseline levels are most stable and interpretable.
- Progesterone: Best tested on day 21 of a 28-day cycle (or 7 days after suspected ovulation). A level above 30 nmol/L indicates ovulation occurred that cycle. Below 5 nmol/L suggests anovulation.
- Testosterone, SHBG, thyroid, vitamin D, ferritin: Can be tested at any point in your cycle. These do not fluctuate meaningfully with the menstrual cycle.
If your periods have stopped entirely, you can test at any time. If your cycles are very irregular and you cannot identify day 2 to 5, testing at any point still provides useful information -- just note on your results where you think you were in your cycle (if known).
Fasting: A morning fasting sample (before 10am, water only) is recommended for the most consistent results, particularly for iron and thyroid markers.
Blood Tests for HRT Monitoring
If you are already taking HRT, periodic blood tests can help your prescriber optimise your treatment. Here is what is most useful to monitor:
Oestradiol
Oestradiol testing is particularly valuable for women using transdermal oestrogen (patches, gels, or sprays), as absorption varies significantly between individuals. The British Menopause Society notes that where symptoms persist despite HRT, a serum oestradiol level can help assess whether adequate absorption is being achieved.
Physiological oestradiol levels -- meaning levels similar to those of premenopausal women -- generally range from approximately 110 to 1,300 pmol/L. Your prescriber will interpret your result in the context of your symptoms and treatment type.
Important: Oestradiol blood tests are less reliable for women taking oral HRT, as the first-pass liver metabolism means blood levels do not accurately reflect tissue exposure. For women on oral preparations, symptoms remain the primary guide.
Testosterone and SHBG
The British Menopause Society recommends measuring total testosterone and SHBG at baseline before starting testosterone therapy and as part of ongoing monitoring. This ensures levels remain within the female physiological range and helps detect excessively high SHBG -- which can bind testosterone and reduce its effectiveness.
FSH on HRT
FSH is generally not useful for monitoring HRT. Oestrogen in HRT suppresses FSH, so levels will be artificially low and do not reflect your underlying ovarian function. Your prescriber should rely on symptom response rather than FSH values to guide dose adjustments.
Thyroid Function
Oral oestrogen (HRT taken by mouth) increases thyroxine-binding globulin (TBG), which can affect thyroid hormone availability. Women on both oral HRT and levothyroxine for hypothyroidism may need their thyroid dose adjusted. Periodic TSH and Free T4 monitoring is advisable in this situation.
Other Markers Worth Monitoring
- Vitamin D: Annual testing is sensible given the increased osteoporosis risk post-menopause. Target levels above 75 nmol/L for bone protection.
- Ferritin: Once periods have stopped, ferritin levels often normalise. If they remain low, investigate other causes of iron loss.
- Lipid profile and HbA1c: Cardiovascular risk increases after menopause as oestrogen's protective effect on lipid metabolism diminishes. Regular cardiovascular marker testing becomes more important.
Understanding Your Results: What the Numbers Mean
Blood test results come with reference ranges, but these ranges are designed to flag disease rather than identify optimal health. Here is a practical guide to interpreting the key menopause-related markers:
| Biomarker | Premenopausal Range | Perimenopausal | Post-menopausal |
|---|---|---|---|
| FSH | 3.9-8.8 IU/L (follicular) | Variable (10-100+ IU/L) | 25-135 IU/L |
| LH | 2-13 IU/L (follicular) | Variable | 15-60 IU/L |
| Oestradiol | 100-1,500 pmol/L (varies by phase) | Fluctuating, often erratic | Below 100 pmol/L |
| Progesterone (day 21) | Above 30 nmol/L (if ovulation) | Often below 5 nmol/L | Below 2 nmol/L |
| TSH | 0.27-4.2 mIU/L (optimal: 0.5-2.5 mIU/L). Values above 4 mIU/L warrant further thyroid investigation. | ||
| Vitamin D | Above 50 nmol/L is considered sufficient by the NHS. Longevity-focused practitioners target 75-125 nmol/L for optimal bone and immune health. | ||
| Ferritin | 13-150 mcg/L (standard range). Below 30 mcg/L is associated with iron deficiency symptoms even if within the "normal" range. Above 50 mcg/L is needed for optimal thyroid function and energy. | ||
A note on perimenopause: FSH levels during perimenopause can swing dramatically -- from premenopausal to postmenopausal and back again within weeks. A single elevated FSH does not confirm menopause, and a single normal FSH does not rule it out. This is precisely why NICE advises clinical diagnosis based on symptoms for women over 45 and why a comprehensive panel (not just FSH) provides a more complete and useful picture.
The Lola Health Approach: At-Home Menopause Blood Testing
The traditional route to menopause blood testing in the UK involves either requesting tests through your GP (who may decline if you are over 45, per NICE guidance) or visiting a private clinic. Both routes can mean delays, limited biomarker panels, and the inconvenience of clinic appointments.
At-home blood testing offers a third option -- and the quality of the sample matters as much as the biomarkers being tested.
Female Hormones Clarity 31
The Female Hormones Clarity 31 panel is designed specifically for women investigating hormonal health. It includes 31 biomarkers covering:
- Reproductive hormones: FSH, LH, oestradiol, progesterone, testosterone, SHBG, free androgen index, DHEA-S, prolactin
- Thyroid function: TSH, Free T4, Free T3
- Iron status: Ferritin, iron, transferrin saturation, TIBC
- Key nutrients: Vitamin D, vitamin B12, folate
- Inflammation: CRP
- Metabolic health: HbA1c, liver function, kidney function
A certified phlebotomist visits your home to collect a venous blood sample -- no finger-prick kits, no failed samples, no clinic visits. Results are reviewed by a doctor and delivered via app within 2-5 days.
For women who want the most comprehensive picture -- including advanced cardiovascular markers (Lp(a), homocysteine, apoB), detailed metabolic health, and additional micronutrients -- the Peak Insights 70 panel covers 70 biomarkers in a single at-home appointment.
Why Venous Blood Draws Matter for Hormone Testing
Many at-home menopause blood test kits use finger-prick (capillary) sampling. While convenient, this method has specific limitations for hormone panels:
- Sample volume: A comprehensive menopause panel testing 10+ biomarkers requires more blood than a finger-prick can reliably produce. Failed or insufficient samples mean retesting and further delays.
- Haemolysis risk: Squeezing the finger to extract blood can cause red blood cells to rupture (haemolysis), which interferes with accurate measurement of certain markers including potassium, LDH, and iron studies.
- Hormone accuracy: Venous blood samples are the gold standard used by NHS laboratories for hormone analysis. Studies show that capillary samples can produce different values for some analytes, particularly at low concentrations -- relevant for post-menopausal oestradiol and testosterone.
Professional phlebotomy at home combines the accuracy of a clinic-quality venous draw with the convenience of not leaving your house. One needle, one appointment, reliable results.
After Your Results: What to Do Next
Blood test results are a starting point, not an endpoint. Here is a practical framework for acting on your menopause panel:
- If your results clearly indicate perimenopause or menopause: Discuss treatment options with your GP or a menopause specialist. HRT is recommended by NICE as a first-line treatment for menopausal symptoms and is appropriate for most women.
- If thyroid markers are abnormal: Your GP can confirm with a repeat test and initiate treatment (typically levothyroxine for hypothyroidism). Treating a thyroid condition often resolves symptoms that were attributed to menopause.
- If iron or ferritin is low: Iron supplementation can have a transformative effect on energy, concentration, and hair quality. Retesting after 3 months of supplementation confirms whether stores are replenishing.
- If vitamin D is low: Supplementation with vitamin D3 (often 1,000-4,000 IU daily depending on baseline level) is straightforward and widely available. Retesting at 3-6 months ensures you have reached adequate levels.
- If everything appears normal but you still have symptoms: Consider retesting in 3-6 months, as perimenopause is a fluctuating state. Also consider lifestyle factors including sleep quality, stress, and exercise, which significantly affect how the menopausal transition is experienced.
Important: Lola Health provides blood testing and doctor-reviewed results to help you understand your health data. We do not prescribe medications including HRT. Any treatment decisions should be made with your GP or a menopause specialist who can assess your full medical history.
Track the Hormones That Matter During Menopause
Menopause affects far more than just your periods. FSH, oestradiol, progesterone, testosterone, SHBG, thyroid markers, and vitamin D all shift during the menopausal transition — and testing them together reveals whether your symptoms are driven by menopause, a thyroid issue, nutritional deficiency, or a combination. A single comprehensive panel replaces months of guesswork.
All results reviewed by a doctor. Free delivery. Results in 2-3 working days.
Frequently Asked Questions
Can a blood test confirm menopause?
For women aged 45 and over, NICE guidelines state that menopause should be diagnosed based on symptoms (irregular or absent periods plus menopause-associated symptoms) without blood tests. For women aged 40-45, an FSH blood test can support the diagnosis. For women under 40, elevated FSH on two tests taken 4-6 weeks apart is required to diagnose premature ovarian insufficiency. A single blood test alone cannot definitively confirm or rule out perimenopause due to the natural fluctuation of hormone levels during the transition.
Which blood test is best for menopause?
FSH is the most commonly requested single marker, but it has significant limitations -- levels fluctuate widely during perimenopause and can be normal one month and elevated the next. A comprehensive panel that includes FSH, LH, oestradiol, progesterone, testosterone, SHBG, thyroid markers (TSH, Free T4, Free T3), vitamin D, and ferritin gives a far more complete and useful picture. This approach rules out conditions with overlapping symptoms in one test rather than multiple appointments.
Can I get a menopause blood test on the NHS?
If you are under 45 with menopausal symptoms, your GP should offer an FSH test per NICE guidelines. If you are 45 or over, GPs are advised to diagnose based on symptoms without blood tests, and may decline to order them. Even when NHS testing is available, it typically covers only FSH -- not the comprehensive panel (thyroid, iron, vitamin D, testosterone, SHBG) that provides the most actionable insight. Private at-home blood testing fills this gap.
What FSH level indicates menopause?
There is no single FSH cutoff that definitively confirms menopause. Generally, FSH levels consistently above 25-30 IU/L suggest declining ovarian function, and postmenopausal levels typically range from 25 to 135 IU/L (average around 60 IU/L). However, during perimenopause, FSH can swing between normal and elevated levels from month to month. This is why NICE recommends clinical diagnosis for women over 45 and why a single FSH measurement has limited value in the perimenopausal period.
When is the best time to take a menopause blood test?
If you are still having periods, test FSH, LH, and oestradiol on day 2-5 of your cycle, and progesterone on day 21 (or 7 days after suspected ovulation). If your periods have stopped, you can test at any time. For the most consistent results, take your test in the morning (before 10am) after an overnight fast. Thyroid, vitamin D, and ferritin markers can be tested at any point in your cycle.
Do I need a blood test if I am already on HRT?
Blood tests are not routinely required for women doing well on HRT -- symptoms are the primary guide. However, blood tests are useful if you have persistent symptoms despite treatment (oestradiol testing can check absorption of transdermal preparations), if you are considering or already using testosterone therapy (BMS recommends baseline and ongoing testosterone and SHBG monitoring), or if you have co-existing thyroid disease and are on oral HRT (which can affect thyroid hormone binding).
How much does a private menopause blood test cost in the UK?
Costs vary significantly depending on the provider and the biomarkers included. Basic FSH-only tests start from around £30-40 with finger-prick kits. Comprehensive menopause panels with reproductive hormones, thyroid, iron, and vitamin D typically range from £80-150 for finger-prick and £130-220 for venous blood draw services with at-home phlebotomy included. The Female Hormones Clarity 31 panel from Lola Health includes 31 biomarkers with an at-home phlebotomist visit.
Can perimenopause blood tests be normal?
Yes, absolutely. Perimenopause is characterised by fluctuating hormone levels, which means your FSH and oestradiol may be completely within the premenopausal range on the day you test, even if you are experiencing genuine perimenopausal symptoms. This does not mean you are not in perimenopause -- it means your hormones happened to be in a normal phase when tested. If your symptoms are consistent with perimenopause and your results are normal, your doctor may still treat based on symptoms (as NICE recommends for women 45+) or suggest retesting in a few months.
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