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Progesterone Blood Test

Mar 12, 2026

Progesterone Blood Test

A progesterone blood test measures the hormone essential for ovulation confirmation, pregnancy support, and menstrual regularity—with levels tested on day 21 (or 7 days post-ovulation) to confirm you've ovulated, making it a key fertility investigation. Progesterone also affects mood, sleep, and anxiety, with low levels causing PMS, irregular periods, and difficulty maintaining pregnancy.

At Blood Test London, progesterone testing costs from £245 with results in 2-3 days. A doctor always reviews every result.

Check Your Progesterone Levels

Understanding Progesterone

What Progesterone Does

Function

Effect

Confirms ovulation

Rises after egg release

Supports pregnancy

Thickens uterine lining

Regulates periods

Controls cycle timing

Affects mood

Calming, anti-anxiety effect

Supports sleep

Promotes restful sleep

Balances oestrogen

Prevents oestrogen dominance

Progesterone Levels by Cycle Phase

Phase

Level (nmol/L)

Follicular (day 1-14)

Below 3

Ovulation confirmed (day 21)

Above 30 (ideally above 50)

Luteal phase

15-90

Post-menopause

Below 3

Pregnancy (first trimester)

30-90

Day 21 level above 30 nmol/L confirms ovulation occurred.

When to Test

For Ovulation Confirmation

  • Day 21 of a 28-day cycle

  • Or 7 days after expected ovulation

  • Adjust for irregular cycles

For Other Purposes

  • Luteal phase (second half of cycle) for general levels

  • Any day if investigating progesterone therapy

Signs of Low Progesterone

  • Irregular or short cycles

  • PMS symptoms

  • Anxiety and mood swings

  • Difficulty sleeping

  • Spotting before period

  • Difficulty getting pregnant

  • Early miscarriage

  • Heavy periods

Testing Options

Single Progesterone - £245

  • Day 21 progesterone

  • Doctor review

Ovulation Panel - £295

  • Progesterone (day 21)

  • LH (day 2-5)

  • FSH (day 2-5)

  • Interpretation

Full Female Hormone Panel - £395

  • Complete hormone assessment

  • Timing guidance included

Book Your Progesterone Test

Book Your Progesterone Test

Price: From £245
Results: 2-3 days
Doctor review: A doctor always reviews every result
Timing: Day 21 (or 7 days post-ovulation)

Book via WhatsApp | Phone: 020 3951 3429

Blood Test London by The Wellness. Progesterone testing from £245. A doctor always reviews every result.