Hormones

Female Hormone Test

Oestradiol, progesterone, LH, FSH, AMH and prolactin — what each measures.

A female hormone test measures the hormones that regulate your menstrual cycle, fertility and perimenopause. The right panel and timing depend on what you're trying to understand — cycle health, fertility, perimenopause or PCOS.

What it measures

Oestradiol

The main form of oestrogen — changes across the cycle and falls in menopause.

Progesterone

Rises after ovulation; tested mid-luteal phase to confirm ovulation.

LH & FSH

Pituitary hormones that drive the cycle. Raised FSH is a marker of perimenopause.

AMH

A marker of ovarian reserve, commonly used in fertility assessment.

Prolactin

Raised levels can disrupt the cycle and affect fertility.

Why it matters

Cycle timing matters — most hormone tests are best collected on specific days of your cycle.
A single result rarely tells the full story; clinicians often look at multiple hormones together.
Symptoms (cycle changes, mood, sleep, hot flushes) are essential context alongside lab values.

How testing works

Pick the panel that matches your goal — cycle health, fertility or perimenopause.
Collect at the recommended cycle day (often day 3 for LH/FSH, day 21 for progesterone).
Results are typically returned in 2–5 working days with clinician interpretation.

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Frequently asked questions

When in my cycle should I test hormones?

LH, FSH and oestradiol are usually tested on days 2–5 of your cycle. Progesterone is tested 7 days after ovulation (typically around day 21 of a 28-day cycle). AMH can be tested at any time.

Can a blood test diagnose perimenopause?

Hormone tests can support the picture but are not used in isolation. Perimenopause is primarily diagnosed clinically from symptoms in women aged 45 or over.