Follicle Stimulating Hormone FSH Test
- Category
- Women's Health
- Sample
- Blood sample taken from a vein in your arm
- Reports () Terms & Conditions Report time varies with time of sample collection.
- In 2 days
- Fasting
- No Fasting
- Age
- 5+ Years
Measures follicle-stimulating hormone (FSH), which helps eggs mature in women and supports sperm production in men.
Used to assess fertility and ovarian reserve, irregular or absent periods, menopause and pituitary disorders, and low sperm count in men.
Irregular or absent periods, PCOS symptoms (acne, excess hair), infertility, pregnancy planning or menopause symptoms.
No fasting needed.
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
In a medical emergency, call 112, or 108 for an ambulance where that service operates, or go to your nearest emergency department. If you are in mental health distress, Tele-MANAS is free and available 24×7 on 14416.
Read our Editorial Policy and Medical Review Process.
For women, your doctor may ask for the sample on a specific day of the menstrual cycle (often day 2–5). High FSH on day 3 can suggest reduced ovarian reserve.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Blood sample taken from a vein in your arm.
Usually within 12–36 hours after the sample reaches the lab. You will receive the report online.