“One elevated FSH level is not enough to confirm
menopause. More important, a low FSH level in a woman
who is having hot flashes and changing periods…”.1

Umbrella
What may the Follicle Stimulating Hormone (FSH) Umbrella include?

Depending on the Source (DotS) this Umbrella may include:

  • Follicle Stimulating Hormone (FSH)

Definition

What is follicle stimulating hormone (FSH)?

DotS the definition of FSH may vary. The (United States) Endocrine Society’s definition is:

“Follicle stimulating hormone (FSH)—In women, FSH helps control the menstrual cycle and the production of eggs by the ovaries. The amount of FSH varies throughout a woman’s menstrual cycle and is highest just before she ovulates. Problems with FSH release can contribute to female infertility. In men, FSH helps control the production of sperm”.2

The North American Menopause Society’s (NAMS) definition is:

“Follicle-stimulating hormone (FSH). A hormone produced by the pituitary gland (located at the base of the brain). In women, FSH stimulates the growth of ovarian follicles (the small cysts that hold the eggs) and the supporting cells responsible for the growth and nurturing of the egg. FSH also stimulates production of estrogen by the ovaries. When estrogen production is low (after menopause), FSH levels will be high”.3

FSH Blood Test

What is a FSH blood test?

In Follicle-Stimulating Hormone (FSH) Blood Test the (United States) MedlinePlus explain:

“The follicle stimulating hormone (FSH) blood test measures the level of FSH in blood. FSH is a hormone released by the pituitary gland, located on the underside of the brain”.4

Menopause

What may it be important to note about menopause and FSH blood levels?

In Diagnosing Menopause: Symptom Assessment and Diagnosis At Perimenopause and Menopause the Australasian Menopause Society explain:

“It is important to explain to women that the blood tests of FSH/oestradiol can fluctuate on a daily basis and therefore are not useful or necessary. It is especially unhelpful to do hormone blood tests while women are on MHT/OCP – symptoms, not blood levels, guide therapy”.5

Follicle Stimulating Hormone (FSH)What is a MHT?

MHT can be an abbreviation for Menopause Hormone Therapy.

What is a OCP?

MHT can be an abbreviation for the Oral Contraceptive Pill.

The NAMS also note:

“…a single FSH level can be misleading in perimenopause because estrogen production does not fall at a steady rate from day to day. Instead, both estrogen and FSH levels can vary greatly during perimenopause. One elevated FSH level is not enough to confirm menopause. More important, a low FSH level in a woman who is having hot flashes and changing periods does not eliminate the likelihood that she is still in perimenopause”.

Invalid Test

In perimenopause, when is a FSH test not valid?

The NAMS note:

“Also, if a woman is using certain hormone therapies (such as birth control pills), a FSH test is not valid”.7

Over-the-Counter Tests

What do the NAMS explain about over-the-counter urine tests for menopause that measure FSH?

The NAMS explain:

“Over-the-counter urine tests for menopause that measure FSH are often advertised, but are expensive and not informative, for the same reasons discussed above”.8

Health Care Provider

What if I would like to find out more about FSH?

If you would like to find out more about FSH, it may be in your best interest to choose to talk to your health care provider about this. Together you can discuss your options and if required, agree on who may be the most appropriate health care provider to help you.

Health Topics A-Z

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Links

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Sources

Where may I find the Sources quoted?

You may find the Sources quoted at:

Sources

  1. How Do I Know I’m In Menopause? What About Follicle-Stimulating Hormone Testing? North American Menopause Society https://www.menopause.org/for-women/menopauseflashes/menopause-symptoms-and-treatments/how-do-i-know-i’m-in-menopause- Accessed: 16 January 2024
  2. Glossary. Endocrine Society https://www.endocrine.org/news-and-advocacy/news-room/glossary Accessed: 16 January 2024
  3. Menopause Glossary: F – Follicle-Stimulating Hormone (FSH). North American Menopause Society https://www.menopause.org/for-women/menopause-glossary#F Accessed: 16 January 2024
  4. Follicle-Stimulating Hormone (FSH) Blood Test. Review Date: 13 July 2021. MedlinePlus https://www.nlm.nih.gov/medlineplus/ency/article/003710.htm Accessed: 16 January 2024
  5. Diagnosing Menopause: Symptom Assessment and Diagnosis At Perimenopause and Menopause. Content Created May 2022. Australasian Menopause Society https://www.menopause.org.au/hp/gp-hp-resources/diagnosing-menopause Accessed: 16 January 2024
  6. How Do I Know I’m In Menopause? What About Follicle-Stimulating Hormone Testing? North American Menopause Society https://www.menopause.org/for-women/menopauseflashes/menopause-symptoms-and-treatments/how-do-i-know-i’m-in-menopause-Accessed: 16 January 2024
  7. How Do I Know I’m In Menopause? What About Follicle-Stimulating Hormone Testing? North American Menopause Society https://www.menopause.org/for-women/menopauseflashes/menopause-symptoms-and-treatments/how-do-i-know-i’m-in-menopause- Accessed: 16 January 2024
  8. How Do I Know I’m In Menopause? What About Follicle-Stimulating Hormone Testing? North American Menopause Society https://www.menopause.org/for-women/menopauseflashes/menopause-symptoms-and-treatments/how-do-i-know-i’m-in-menopause- Accessed: 16 January 2024
  9. How Do I Know I’m In Menopause? What About Follicle-Stimulating Hormone Testing? North American Menopause Society https://www.menopause.org/for-women/menopauseflashes/menopause-symptoms-and-treatments/how-do-i-know-i’m-in-menopause- Accessed: 16 January 2024
Topic Last Updated: 16 January 2024 – Topic Last Reviewed: 16 January 2024

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