By Adrian Stone, BHSc (Nutritional Medicine), BHSc (Naturopathy), Living Holistic Health — perimenopause testing is one of the most requested and least understood parts of midlife care. This article explains which tests help, which do not, and why.
The most common test a woman asks me for in her forties is the one least likely to help her. She wants her hormones checked. It is a reasonable request. Something has clearly changed, and a number on a page feels like proof.
The problem is that in perimenopause the numbers move faster than the pathology lab can print them. In fact, a result from Tuesday may bear no relation to Friday. So before we talk about perimenopause testing, we need to be honest about what a single blood test can and cannot say.
This is the second article in our perimenopause series. The first covered perimenopause symptoms and what drives them. Here we cover perimenopause testing: hormone tests, the pathology that actually matters, and where functional testing fits. As always, nothing here replaces your GP. It is designed to make your next appointment more useful.
Can Blood Testing Diagnose Perimenopause?
No. Perimenopause is diagnosed from the pattern of your cycle and symptoms, not from a blood test. Hormone-based perimenopause testing is unreliable because levels fluctuate so much in the transition. A single measurement of oestrogen or FSH cannot tell you where you are. Clinical guidelines therefore recommend against routine hormone testing for women over 45 with typical symptoms.
The research on this is unusually clear. According to PubMed, work led by Henry Burger at Prince Henry’s Institute in Melbourne showed that FSH fluctuates markedly in women with irregular cycles. The reason is that ovulatory and anovulatory cycles are mixed together. The authors concluded there is no specific endocrine marker of the early or late transition. That makes FSH or oestradiol unreliable for staging an individual.
That is why the STRAW+10 staging system, the framework researchers use worldwide, defines the transition by bleeding pattern first. The early transition is a cycle length that varies by seven days or more. The late transition is a gap of sixty days or longer. Hormones are supportive criteria, not the definition.
What the guidelines say about perimenopause testing
The UK NICE guideline, summarised in the BMJ, recommends diagnosing perimenopause in women over 45 on symptoms alone. No laboratory tests are required. Australian practice follows the same logic. Consequently, if you are 47 with changing cycles and night sweats, a normal FSH does not mean you are “not in perimenopause”. It means you were tested on a day your ovaries were cooperating.
When Is Hormone Testing Useful in Perimenopause?
Hormone-based perimenopause testing is useful when the picture is unclear or the age is unusual. That means symptoms before 45, and particularly before 40, where premature ovarian insufficiency must be excluded. It also helps when periods are absent for other reasons, such as a hysterectomy or hormonal contraception, so there is no cycle pattern to read.
Under 40, this is a GP matter, and an important one. Early loss of ovarian function carries long-term bone and cardiovascular implications, and it is managed medically. Under 45, a GP may reasonably run FSH on two occasions several weeks apart. Above that, the pattern usually tells the story.
The AMH question
Anti-Müllerian hormone, or AMH, reflects the remaining follicle pool. In the SWAN study of more than 1,500 women, a very low AMH predicted the final period within the next year or two better than FSH did. Interestingly, that makes it a reasonable conversation for a woman weighing up timing decisions. It is still not a diagnosis, and it does not predict how symptomatic the transition will be.
Which Perimenopause Testing Actually Matters?
The perimenopause testing that matters most is the pathology that catches what mimics the transition and what changes because of it. That means a full blood count with iron studies, thyroid function, a lipid panel including ApoB, a one-off lipoprotein(a), HbA1c or fasting glucose and insulin, vitamin D, and a blood pressure check. Later, a bone density scan.
Notably, none of these is exotic. All of them are GP-ordered, most are Medicare-rebatable when clinically indicated, and together they answer the two questions that matter. First, is something else causing these symptoms? Second, what is the transition doing to my long-term health that I can act on now?
Iron and thyroid: the two great mimics
Periods often become heavier in the transition. Iron deficiency then produces fatigue, brain fog and low mood that look exactly like perimenopause. Ask for ferritin alongside a CRP. Ferritin rises with inflammation, so it can read “normal” while iron stores are actually depleted. A large pooled analysis in the American Journal of Clinical Nutrition showed how much inflammation distorts ferritin. That is why the two are interpreted together.
Similarly, thyroid dysfunction is more common in women and rises with age. Its symptoms overlap almost completely with the transition. A TSH is the starting point; where there is a family history or the TSH is borderline, thyroid antibodies add useful information. Importantly, please do not self-supplement iron or iodine on the strength of symptoms. Both cause harm in excess, and both need interpreting.
Cholesterol, blood sugar and blood pressure
This is the part of perimenopause testing most women are never offered, and it is arguably the most important. In SWAN, total cholesterol, LDL cholesterol and ApoB all rose sharply within the year either side of the final period. That pattern is consistent with menopause rather than ageing. The American Heart Association now describes midlife as a critical window for cardiovascular prevention in women.
So ask for a lipid panel that includes ApoB, and ask for lipoprotein(a) once in your life. Lp(a) is more than 90 per cent genetic, so it only needs measuring once. Importantly, it changes how aggressively other risks are managed. Add HbA1c and, where available, fasting insulin, because insulin sensitivity shifts as fat moves centrally. Our articles on reading cholesterol results and the heart tests most people are not getting go deeper.
Bone density: timing matters more than most people realise
Bone loss, meanwhile, does not wait for menopause. In SWAN, it began about a year before the final period and ran fastest for the two years after it. Around seven per cent of spine density was lost in that window. Therefore a baseline DEXA scan around the final period, rather than years later, is the useful one. It gives you and your GP something to act on while it still counts.
What About Functional Perimenopause Testing?
Functional tests such as dried urine hormone panels measure how hormones are being broken down rather than simply how much is present. They can be genuinely informative for metabolite pathways and cortisol patterns. However, they do not diagnose perimenopause, and endocrine societies do not endorse them for that purpose. They are only worth doing when the result would change the plan. In perimenopause testing terms, they are an adjunct, not a starting point.
I want to be straight about this, because it is where naturopathy is most often criticised and sometimes fairly. A dried urine panel can show which oestrogen metabolite pathways are dominant and how cortisol is being metabolised. It can also point to where a nutrient or inflammatory bottleneck may sit. In a complex case, that is useful information you cannot get from a serum test.
Two caveats apply. First, the main validation study for the dried urine method was published by the manufacturer’s own scientists. That does not make it wrong, but it does mean independent replication is thin. Second, the underlying hormones are still fluctuating, so a snapshot of metabolites in the early transition needs the same humility as a serum result.
Cortisol testing and the “adrenal fatigue” trap
Salivary and urinary cortisol profiles are heavily marketed to tired women. Yet a systematic review of 58 studies found the cortisol-and-fatigue literature almost systematically conflicting. It concluded that “adrenal fatigue” is not a medical condition. Stress physiology is real and it matters enormously in the transition. A cortisol curve, on the other hand, rarely changes what I would do about it. Our article on the “cortisol belly” takes this further.
Overall, my rule for any functional test is simple. I order it if it will better inform the treatment plan and get the patient a better result faster. If it will not do both, we do not do it.
How Do We Approach Perimenopause Testing at the Clinic?
We start with your history and your cycle, then review any pathology you already have. Where gaps exist, we refer you through your GP for the standard tests above. Functional testing is added only when the standard picture leaves a specific question unanswered. Every result is interpreted in the context of your symptoms, not in isolation. In short, perimenopause testing follows the history rather than leading it.
Practically, this means your first appointment is mostly conversation. We map your timeline, your family history, your digestion, your diet and your stress load. Then we decide, together, whether any further testing would actually change what we do. Naturopathy is evidence based; it just depends which version of evidence you are prepared to look at. The honest answer here is that history beats hormones.
We do not diagnose perimenopause and we do not treat menopausal disease, but we do support you through it. We work alongside your GP. Menopausal hormone therapy, where it is right for you, is a decision that sits with your doctor. If you would like help making sense of your results, you can book an appointment at our Geelong or Drysdale rooms.
What Should You Ask Your GP For?
Take this perimenopause testing list to your next appointment. Your GP will decide what is clinically indicated, and some items may not be rebatable, but the conversation is worth having.
- Full blood count, ferritin and iron studies, with a CRP for context
- Thyroid function (TSH), plus thyroid antibodies if borderline or if there is a family history
- Lipid panel including ApoB, and a one-off lipoprotein(a)
- HbA1c, and fasting glucose with insulin where available
- Vitamin D, particularly through a Geelong winter
- Blood pressure, and a discussion about bone density timing
- FSH only if you are under 45, or your cycle pattern cannot be read
Frequently Asked Questions
What perimenopause testing should I ask for first?
There is no single best test. Perimenopause is identified from your cycle pattern and symptoms. The most useful perimenopause testing is the pathology that rules out mimics and tracks what the transition changes. That means iron studies, thyroid function, lipids including ApoB, blood sugar markers, vitamin D and, in time, bone density.
Why did my hormone test come back normal when I have symptoms?
Because hormone levels in the transition fluctuate from day to day, and ovulatory cycles still occur. A normal FSH or oestradiol on one day does not exclude perimenopause. Guidelines recommend against routine hormone testing for this reason in women over 45.
Is DUTCH testing worth it for perimenopause?
Sometimes, in specific situations. Dried urine testing can show how oestrogen and cortisol are being metabolised, which occasionally changes a plan. It cannot diagnose perimenopause, the validation evidence is largely manufacturer-published, and it should not be a first step before standard GP pathology.
Should I test my cortisol if I feel burnt out?
Usually not. The evidence linking cortisol profiles to fatigue is conflicting, and “adrenal fatigue” is not a recognised diagnosis. If you have symptoms such as unexplained weight gain, easy bruising, muscle weakness or very high blood pressure, see your GP. Genuine cortisol disorders are rare but important.
When should I have a bone density scan?
Discuss it with your GP around the time of your final period. Ask earlier if you have risk factors such as low body weight, a family history of osteoporosis, early menopause or long-term steroid use. Bone loss accelerates from about a year before the final period, so a baseline scan then is more useful than one a decade later.
References
Studies on perimenopause testing and diagnosis
The following were retrieved via PubMed.
- Burger HG, Hale GE, Dennerstein L, Robertson DM. Cycle and hormone changes during perimenopause: the key role of ovarian function. Menopause. 2008;15(4 Pt 1):603-12. https://doi.org/10.1097/gme.0b013e318174ea4d
- Harlow SD, Gass M, Hall JE, et al. Executive summary of the Stages of Reproductive Aging Workshop + 10. J Clin Endocrinol Metab. 2012;97(4):1159-68. https://doi.org/10.1210/jc.2011-3362
- Sarri G, Davies M, Lumsden MA. Diagnosis and management of menopause: summary of NICE guidance. BMJ. 2015;351:h5746. https://doi.org/10.1136/bmj.h5746
- Finkelstein JS, Lee H, Karlamangla A, et al. Antimullerian hormone and impending menopause in late reproductive age: SWAN. J Clin Endocrinol Metab. 2020;105(4):e1862-71. https://doi.org/10.1210/clinem/dgz283
- Newman M, Curran DA. Reliability of a dried urine test for comprehensive assessment of urine hormones and metabolites. BMC Chem. 2021;15(1):18. https://doi.org/10.1186/s13065-021-00744-3
- Cadegiani FA, Kater CE. Adrenal fatigue does not exist: a systematic review. BMC Endocr Disord. 2016;16(1):48. https://doi.org/10.1186/s12902-016-0128-4
Studies on iron, thyroid, lipids, glucose and bone in midlife women
- Namaste SM, Rohner F, Huang J, et al. Adjusting ferritin concentrations for inflammation: BRINDA project. Am J Clin Nutr. 2017;106(Suppl 1):359S-371S. https://doi.org/10.3945/ajcn.116.141762
- del Ghianda S, Tonacchera M, Vitti P. Thyroid and menopause. Climacteric. 2014;17(3):225-34. https://doi.org/10.3109/13697137.2013.838554
- Matthews KA, Crawford SL, Chae CU, et al. Are changes in cardiovascular disease risk factors in midlife women due to chronological aging or to the menopausal transition? J Am Coll Cardiol. 2009;54(25):2366-73. https://doi.org/10.1016/j.jacc.2009.10.009
- El Khoudary SR, Aggarwal B, Beckie TM, et al. Menopause transition and cardiovascular disease risk: a scientific statement from the American Heart Association. Circulation. 2020;142(25):e506-e532. https://doi.org/10.1161/CIR.0000000000000912
- Corral P, Matta MG, Aguilar-Salinas C, et al. Lipoprotein(a) throughout life in women. Am J Prev Cardiol. 2024;20:100885. https://doi.org/10.1016/j.ajpc.2024.100885
- Greendale GA, Sowers M, Han W, et al. Bone mineral density loss in relation to the final menstrual period in a multiethnic cohort: SWAN. J Bone Miner Res. 2012;27(1):111-8. https://doi.org/10.1002/jbmr.534
This article is general information and not a substitute for individual medical advice. Pathology should be ordered and interpreted with your GP. For private health consultation claiming, please enquire with your health fund to assess coverage. Nutrition consultations are covered by some private health funds — please check with yours first.
