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Our perimenopause test is for women who believe they may be starting to transition through the menopause. It tests three key female hormones - FSH, LH and oestrogen which change when entering the menopause.
What's included
your discount will be applied at checkout

What WILL a Perimenopause
Blood Test TELL YOU?

The perimenopause is the phase a woman goes through, usually from their early to mid-40’s, as they transition towards the menopause. It is during this time that most women experience the symptoms of irregular periods, hot flushes, night sweats, brain fog, poor concentration and weight gain. 

As women transition towards the menopause, the ovaries become less response which will lead to an increase in the levels of FSH and LH. At the same time, oestradiol which is produced by the ovaries will start to decline. Our perimenopause test analyses all 3 female hormones and will indicate if you are transitioning towards the menopause.

When to take This test

The perimenopause test should be taken on day 3 of your menstrual cycle (day 1 being the first day of your period). If you are having irregular or large gaps between your periods, you can take the test at any time.

What Are the Symptoms
of the Perimenopause?

The most common symptoms of the perimenopause are:

  • Irregular periods
  • Hot flushes
  • Night sweats
  • Reduced sex drive 
  • Vaginal dryness
  • Mood swings

Often the cause of these symptoms is a result of the declining levels of oestrogen. Learn more about the perimenopause in our Guide To Menopause Symptoms.

Explore our ground-breaking new product

Female Hormone Mapping

Our next generation Female Hormone Mapping™ product combines artificial intelligence, with blood analysis and clinical expertise to provide you with personalised insights into your key female hormone fluctuations over your entire menstrual cycle. This gives you the data you need to understand if you’re in the perimenopause.

It also provides you with an innovative measurement of your hormone networks so you can track changes in your ovarian responsiveness and the speed of your transition towards the menopause.

What’s the Difference Between the Perimenopause Test and Menopause Test?

The perimenopause test measures the three key hormones that fluctuate during this phase of the menopause – it helps to identify if you are transitioning towards the menopause.

Our menopause test measures the same three hormones plus additional biomarkers key to health areas which are more at risk as you transition through the menopause and beyond.  We recommend you take the menopause test if you want a wider view of the health markers that have the greatest impact on your wellbeing during this stage of life.

BiomarkerPerimenopause TestMenopause Test
Correct Calcium
Cortisol (9am)
Follicle Stimulating Hormone (FSH)
HDL Cholesterol
HDL % of Total Cholesterol
LDL Cholesterol
Luteinising Hormone (LH)
Magnesium (serum)
Oestrogen (Oestradiol)
Testosterone (Total)
Thyroid Stimulating Hormone (TSH)
Thyroxine (T4, free direct)
Total Cholesterol
Vitamin D (25 OH)

improve your unique self

Want to improve your health & wellbeing? Forth gives you insight into your body’s key biomarkers. By tracking essential markers overtime you can build a picture of your own unique self and discover how your body responds to the changes you make so you can reach your personal best.

Frequently asked questions

 Here are some of the most frequently asked questions. If you need anything else try our help section.

  • What are the stages of the menopause?

    There are 3 stages of the menopause:

    1. Perimenopause – this is a phase of time from when your hormones begin to fluctuate, and you begin to experience irregular periods until you reach menopause when your periods stop. It can last anywhere between 4 and 8 years.
    2. Menopause –used to describe the time when you have not had a period for 12 consecutive months.
    3. Post-menopause – the 24-36 months after you had your last period. Many women start to notice their symptoms reducing.
  • What is oestradiol?

    Oestradiol is the main type of oestrogen found in women. It is produced by the ovaries and has many functions, particularly within the reproductive system.

    Oestradiol levels decline with age and there is a significant drop during the menopause which is associated with many of the menopausal symptoms like hot flushes, mood swings and night sweats. In addition, reduced oestrogen along with aging increases the risk of osteoporosis and cardiovascular disease.

  • What age does the menopause occur?

    The average age of menopause – the point at which period have stopped – in the UK is 51. However, the perimenopause usually happens when a woman reaches her 40s although it can start as late as 50.

  • What lifestyle changes can I make to help manage the menopause transition?

    The reduction in oestrogen levels are the cause of many menopause symptoms and there are long-term risks of cardiovascular disease and osteoporosis after the menopause has taken place.

    There are many things you can do to help manage the symptoms of the menopause and reduce your risk of chronic disease, including:

    • Eat a healthy, balanced diet rich in fruit, vegetables, and wholegrains, low in saturated fat, salt and sugar
    • Make sure you are including good sources of calcium into your diet to help keep your bones strong and lower the risk of osteoporosis
    • Get some vitamin D. As you age and oestrogen levels drop your bones become weak which can lead to osteoporosis, so having enough vitamin D will help keep your bones strong. Vitamin D also aids the body in absorbing calcium. The best source is sunlight exposure but there are food sources like oily fish and eggs. Most adults need to take a vitamin D supplement in the winter months, but if you are going through the menopause a supplement all year round may be of benefit – but check your levels first to establish if you are low in vitamin D (we recommend >75 mol/L for optimum wellbeing).
    • Exercise regularly to maintain bone health focusing on weight bearing exercises. Exercise also helps some of the other symptoms of the perimenopause and helps reduce your risk of heart disease.

Want To Personalise Your test?

Would you prefer to test more biomarkers in the same sample of blood? All our tests are customisable and can be tested in just one sample of blood. Click the button below to add more biomarkers to this test.

Service Status

Kit Dispatch

Kits ordered before 1pm from Monday to Friday continue to be dispatched same day via First Class Royal Mail. After 1pm your kit will be dispatched the next working day. Orders placed on the weekend will be despatched Monday.

Postal Service

There may be some delays in parts of the UK occurring, we recommend posting into a priority post box. Click here for updates on the Royal Mail service. Click here for updates on the Royal Mail service.

Lab Analysis

Our labs are operating as normal.

Doctor/nurse reviews

Our doctors and nurses are currently working remotely and continue to review results.

Home phlebotomy appointments

Our home phlebotomy service is running but please be aware, if you or anyone in your household have experienced symptoms of COVID-19 within the last 14 days, due to the current government guidelines, we are unable to arrange an appointment at this time. Due to a high demand for nurses, along with current covid restrictions around the UK, there may be a delay in providing an appointment.

Customer service

Our customer service team are currently working from home, available to answer any questions via email.

Results dashboard

You can continue to access your results as normal either through your browser or via our iOS or Android app.


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