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(biochemistry) A gonadotropic glycoprotein hormone, secreted in part of the pituitary gland, that stimulates the growth of ovarian follicles in female mammals, and induces spermatogenesis in male mammals.

FSH (α-FSH (green), β-FSH (orange)) with receptors (blue)

(biochemistry) A gonadotropic glycoprotein hormone, secreted in part of the pituitary gland, that stimulates the growth of ovarian follicles in female mammals, and induces spermatogenesis in male mammals.

Follicle-stimulating hormone

(biochemistry) A gonadotropic glycoprotein hormone, secreted in part of the pituitary gland, that stimulates the growth of ovarian follicles in female mammals, and induces spermatogenesis in male mammals.

Reference ranges for the blood content of follicle-stimulating hormone levels during the menstrual cycle.

• The ranges denoted By biological stage may be used in closely monitored menstrual cycles in regard to other markers of its biological progression, with the time scale being compressed or stretched to how much faster or slower, respectively, the cycle progresses compared to an average cycle.
• The ranges denoted Inter-cycle variability are more appropriate to use in non-monitored cycles with only the beginning of menstruation known, but where the woman accurately knows her average cycle lengths and time of ovulation, and that they are somewhat averagely regular, with the time scale being compressed or stretched to how much a woman's average cycle length is shorter or longer, respectively, than the average of the population.
• The ranges denoted Inter-woman variability are more appropriate to use when the average cycle lengths and time of ovulation are unknown, but only the beginning of menstruation is given.