What does the Follicle-Stimulating Hormone (FSH) - FSH blood test mean? Get a free analysis of your blood test now. Here's what you get with our free analysis:
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FSH is a hormone produced by the pituitary gland that plays a crucial role in the reproductive system. In men, it stimulates the production of sperm in the testes. In women, it regulates the menstrual cycle and egg production. The test is used to assess fertility, diagnose pituitary disorders, evaluate menstrual problems, and determine the onset of menopause. FSH levels fluctuate throughout a woman's menstrual cycle and life stages, while in men, they remain relatively constant after puberty. Abnormal FSH levels can indicate various conditions, including infertility, hormonal imbalances, and certain types of tumors.
Acceptable Range: 1.5 to 12
Ideal for Women: 4.7-21.5 (follicular phase), 5.7-21.5 (luteal phase), 25.8-134.8 (post-menopause)
Ideal for Men: 1.5-12.4
Ideal for Girls: 0-4.0 (pre-puberty), 0.3-10.0 (puberty)
Ideal for Boys: 0-5.0 (pre-puberty), 0.3-10.0 (puberty)
Test Method: This test is typically taken via a blood sample.
What do readings below 1.5 mIU/mL for Follicle-Stimulating Hormone (FSH) - FSH mean?
A low FSH level in men may indicate:
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Hypogonadotropic hypogonadism (decreased function of the testes or ovaries due to pituitary or hypothalamus problems)
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Pituitary gland disorders
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Klinefelter syndrome
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Use of certain medications
In women, low FSH can suggest:
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Polycystic ovary syndrome (PCOS)
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Pregnancy
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Pituitary tumor
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Hypothalamic suppression
Low FSH may affect fertility and sexual function in both sexes.
What do readings above 12 mIU/mL for Follicle-Stimulating Hormone (FSH) - FSH mean?
Elevated FSH levels in men may indicate:
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Primary testicular failure
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Klinefelter syndrome
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Testicular damage from chemotherapy or radiation
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Advancing age
In women, high FSH can suggest:
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Primary ovarian insufficiency
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Menopause or perimenopause
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Turner syndrome
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Ovarian failure due to chemotherapy or radiation
High FSH often indicates decreased fertility or reproductive function. In men, it may lead to reduced sperm production. In women, it can signify decreased ovarian reserve or the transition to menopause.