Fsh

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

Follicle stimulating hormone

Definition
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Glycoprotein hormone produced in the adenohypophysis, which predominantly controls the excretory function of the gonads; thus, the germinal epithelium is continuously stimulated in men (spermiogenesis in the tests) and cyclically in women (follicle maturation in the ovaries); the release occurs by pulsatile secretion of GnRH (gonadotropin releasing hormone) from the hypothalamus and is subject to an endogenous feedback mechanism.S.a. GnRH and LH.

General information
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Reference ranges (U7l)

Reference range women (U/l)

  • Follicular phase: 2-10
  • Ovulation phase: 8-20
  • Luteal phase: 2-8
  • Postmenopause: >20

Reference range men (U/l)

  • Prepubertal: <0,5
  • Postpubertal: 1.2-10.1

Clinical picture
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Increased values (women):

  • primary ovarian failure (postmenopause, premature ovarian failure, gonadal dysgenesis, polycystic ovaries)

Elevated values (men):

  • primary hypogonadotropic hypogonadism (e.g. Klinefelder syndrome), tubule damage, dysfunction of spermatogenesis, reduction of germinal cells

Humiliated values (women):

  • sec. Ovarian insufficiency due to hypopituitarism, hypothalamic dysfunction (e.g. Kallmann syndrome), pituitary tumours, medication (ovulation inhibitors, sexual steroids)

Humiliated values (men):

  • sec. hypogonadotropic hypogonadism, sec. testicular insufficiency, hypothalamic-pituitary dysfunctions

Functional deficiency:

  • High-performance sport, serious illness, malnutrition, anorexia nervosa

Literature
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  1. Böhm C et al (2017) in: Neumeister B et al. clinical guide to laboratory diagnostics. Urban&Fischer Publisher Munich S. 344-345

Outgoing links (2)

Gnrh; Lh;

Authors

Last updated on: 29.10.2020