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Oestradiol

Hormonal Health

38.00

The Oestradiol test measures the main form of oestrogen in the body. It helps assess hormonal balance, reproductive health, and endocrine function.

Turnaround time

1-2 days

Biomarkers count

1

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Same-Day Appointments

UKAS Accredited Labs

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Under 18? Patients under 18 can only be seen at GB Medlabs and Clinilabs, Monday to Friday only.

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Details about Oestradiol

What is the Oestradiol test?

The Oestradiol (E2) test measures levels of oestradiol, the most biologically active form of oestrogen. Oestradiol is produced mainly by the ovaries in women, the testes in men, and in smaller amounts by adrenal tissue and fat cells.

This hormone plays a key role in the menstrual cycle, ovulation, bone health, cardiovascular function, mood regulation, and sexual development. In men, oestradiol is important for bone density, libido, and overall hormonal balance.

The test is used in both women and men to assess endocrine and reproductive health.

Why do I need an Oestradiol test?

Oestradiol imbalance can cause a wide range of symptoms and may affect fertility, menstrual regularity, and overall wellbeing.

You may benefit from this test if you:

Have irregular or absent periods
Are investigating fertility or ovulation
Experience menopausal or perimenopausal symptoms
Have symptoms of hormonal imbalance
Are monitoring hormone therapy
Have reduced libido or mood changes
Are assessing pubertal or endocrine disorders
Are monitoring testosterone-related balance (in men)

Testing helps determine whether symptoms are linked to oestrogen levels.

Benefits of the test

Assesses oestrogen status accurately
Measures the primary active oestrogen.
Supports fertility and cycle assessment
Useful in ovulation and menstrual evaluation.
Helps assess menopausal status
Low levels are typical after menopause.
Important in hormone therapy monitoring
Used in HRT and endocrine follow-up.
Relevant for men’s hormone balance
Helps assess oestrogen–testosterone balance.
Supports bone and cardiovascular health assessment
Oestrogen plays a protective role.
Simple blood-based testing
Requires only one blood sample.
Widely used in clinical endocrinology
Standard hormone assessment.

Step-by-step: How we offer testing

Clinic-based testing (UK-wide)

Choose your nearest UK clinic
Attend your appointment
Blood sample taken by a clinician
Sample sent to the laboratory
Results issued once analysis is complete

Home or hotel visit (+£60, UK-wide)

Mobile phlebotomist attends your location
Blood sample taken at home or hotel
Sample securely transported to the laboratory

Your results explained

Low oestradiol

May indicate ovarian insufficiency, menopause, or pituitary causes
In men, may affect bone health and libido

Typical UK reference examples (vary by lab):

Postmenopausal women: <110 pmol/L
Men: <40 pmol/L

Normal oestradiol

Indicates expected hormone production for age and cycle phase
Supports normal reproductive and endocrine function

Reference ranges vary widely depending on menstrual cycle phase

High oestradiol

May be seen in pregnancy, ovarian stimulation, or hormone therapy
In men, may contribute to symptoms such as gynaecomastia

Interpretation must consider cycle timing, medications, and clinical context

How It Works

Simple steps to get your results

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Book Online

Choose your test online and book in seconds. Select your preferred clinic location or home visit option.

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Visit or Test at Home

Attend one of our UK or London clinics, arrange a home nurse visit, or use a finger-prick kit where available.

3

Get Your Results

Your sample is analysed by accredited UK laboratories, with secure results delivered directly to you.

Take control of your health with London Blood Tests

How to Prepare for Your Test

Follow these guidelines for accurate results

Sample Timing

Where possible, attend your blood test between 7am and 12pm. Please wait until any short-term illness or infection has fully resolved before testing. Avoid intense exercise for 24–48 hours beforehand, as this can affect certain markers.

Fasting & Hydration

Fasting is not always required, but some tests may recommend it. If fasting is advised, avoid food for 8–12 hours before your appointment and drink water only. Stay well hydrated, as this helps with sample collection and accuracy.

Medications & Supplements

Continue prescribed medications unless advised otherwise by your clinician. Avoid vitamin, mineral, or biotin supplements for at least 24–48 hours before your test, as these can interfere with results. If you are unsure about any medication or supplement, please let us know before your appointment.

Hormones & Menstrual Cycle

For hormone-related tests, timing within your menstrual cycle may be important. If relevant, follow any specific guidance provided on your test page.

If you have any questions or special circumstances, our team is happy to advise before your appointment.

Frequently Asked Questions

Oestradiol is the main and most active form of oestrogen.

Yes, levels vary significantly across the cycle.

Yes, levels fall significantly after menopause.

Yes, it is important for male hormone balance.

Yes, especially for ovulation and ovarian function.

Yes, HRT and other hormones influence levels.

Fasting is not required.

Stress may indirectly influence hormone balance.

Yes, often with FSH, LH, and progesterone.

It indicates hormonal imbalance and supports further endocrine evaluation.