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LH and FSH Blood Test

Apr 9, 2026

LH and FSH Blood Test

LH (luteinising hormone) and FSH (follicle-stimulating hormone) blood tests measure the two key pituitary hormones that control your reproductive system—triggering ovulation, regulating menstrual cycles, and controlling sperm production—making them essential for investigating fertility issues, PCOS, menopause status, and hormonal imbalances in both women and men.

At Blood Test London, LH and FSH testing costs from £265 with results in 2-3 days. A doctor always reviews every result.

Check Your Fertility Hormones

What LH and FSH Do

In Women

Hormone

Role

FSH

Stimulates egg development in follicles

LH

Triggers ovulation (LH surge mid-cycle)

Both

Regulate menstrual cycle timing

In Men

Hormone

Role

FSH

Stimulates sperm production

LH

Stimulates testosterone production

Both

Essential for male fertility

Reference Ranges

Women (varies by cycle phase)

Phase

FSH (IU/L)

LH (IU/L)

Follicular (day 2-5)

3-10

2-10

Mid-cycle peak

5-20

15-60

Luteal

1-8

1-10

Post-menopause

>30

>15

Men

Marker

Normal Range

FSH

1.5-12 IU/L

LH

1.5-9 IU/L

LH:FSH Ratio

The ratio of LH to FSH is important:

Ratio

May Indicate

1:1 (normal)

Normal hormonal balance

>2:1

Possible PCOS

Both elevated

Menopause or ovarian failure

Both low

Pituitary problem

When to Test

Best Time for Women

  • Day 2-5 of cycle for baseline

  • This is when levels are most consistent

  • If irregular cycles, test any day

For Men

  • Any time (no cycle variation)

  • Morning preferred

Who Should Test?

Women

  • Irregular or absent periods

  • Trying to conceive

  • Suspected PCOS

  • Suspected menopause

  • Fertility investigation

Men

  • Low sperm count

  • Low testosterone symptoms

  • Fertility investigation

Our LH/FSH Testing Options

LH and FSH Only - £265

  • Both hormones

  • Doctor interpretation

Female Fertility Panel - £395

  • LH, FSH

  • Oestradiol, progesterone

  • AMH

  • Full interpretation

Complete Hormone Panel - £495

  • Full reproductive hormones

  • Thyroid function

  • Prolactin

  • Extended consultation

Book Your LH and FSH Test

Book Your Test

Price: From £265
Results: 2-3 days
Doctor review: A doctor always reviews every result
Best time: Day 2-5 of menstrual cycle (women)

Book via WhatsApp | Phone: 020 3951 3429

Blood Test London by The Wellness. LH and FSH testing from £265. A doctor always reviews every result.