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Oestradiol Test

The primary oestrogen — essential for cycle health, bone density, and mood

$65
Results in 1-2 business days2,300+ collection centresNo GP referral needed

1 in 8

Australian women experience premature ovarian insufficiency before age 40

Source: Jean Hailes for Women's Health 2022

Why This Test

Oestradiol (E2) is the most potent form of oestrogen — its levels shift dramatically across the menstrual cycle and throughout life. Oestradiol is produced mainly by the ovaries and plays a central role in bone density, cardiovascular health, brain function, and reproductive health. It rises before ovulation and falls during menopause. In men, oestradiol (produced in small amounts by the testes and from testosterone conversion) is important for bone health and libido. This test is commonly used in fertility investigations, menopause assessment, and hormone replacement monitoring.

What This Test Measures

Oestradiol

Oestradiol is produced mainly by the ovaries and plays a central role in bone density, cardiovascular health, brain function, and reproductive health. It rises before ovulation and falls during menopause. In men, oestradiol (produced in small amounts by the testes and from testosterone conversion) is important for bone health and libido. This test is commonly used in fertility investigations, menopause assessment, and hormone replacement monitoring.

Who May Benefit

  • Irregular, absent, or very short menstrual cycles
  • Perimenopause or menopause symptom assessment
  • Fertility or IVF monitoring
  • Low bone density or osteoporosis risk
  • Mood changes, hot flushes, or sleep disruption
  • Monitoring hormone replacement therapy (HRT)
Sample Type
Blood (venous)
Fasting
Not required
Best Time
Day 2–5 of menstrual cycle for baseline; otherwise note cycle day on request — timing significantly affects interpretation
Results
1-2 business days

Understanding Your Results

LowExpected after menopause; if premenopausal and not in the luteal phase, may be worth discussing with your healthcare practitioner
Low-normal / post-menopausal rangeNormal in early follicular phase or after menopause — interpretation is cycle phase and life-stage dependent
Within reference rangeOestradiol reference ranges vary significantly by cycle phase — your full report includes phase-specific context
Above reference rangeElevated oestradiol outside of ovulation peak may warrant discussion with your healthcare practitioner
Your results come with personalised context and next steps. If anything needs attention, we'll guide you through what it means and suggest discussing with your doctor.

Common Questions

It depends on what you are investigating. Day 2–5 is used for baseline fertility assessment; around day 12–14 captures the pre-ovulatory peak; day 21 is used in progesterone/luteal phase assessment. Your healthcare practitioner will advise on the right timing.

Yes. Men produce small amounts of oestradiol (primarily from testosterone conversion). Elevated oestradiol in men may be associated with excess body fat or certain medical conditions and is worth investigating in the context of hormonal symptoms.

No fasting is required.

Oestradiol varies considerably across the cycle and throughout life — frequency depends entirely on what is being investigated. For IVF monitoring, testing may occur multiple times in a single cycle. For general menopause assessment, annually or as symptoms change.

Related Resources

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Important Information

This test provides health information for educational purposes. Results should be discussed with your healthcare practitioner. Not a substitute for medical advice, diagnosis, or treatment.

NATA-accredited · 2,300+ collection centres

Oestradiol
$65