Before puberty - 0 to 4.0 mIU/mL (0 to 4.0 IU/L) During puberty - 0.3 to 10.0 mIU/mL (0.3 to 10.0 IU/L) Women who are still menstruating - 4.7 to 21.5 mIU/mL (4.5 to 21.5 IU/L) After menopause - 25.8 to 134.8 mIU/mL (25.8 to 134.8 IU/L)
In kids, FSH levels are normally low. As puberty approaches (usually between ages 10 and 14), the brain makes gonadotropin-releasing hormone (GnRH), which starts the changes toward sexual maturity. GnRH signals the pituitary gland to release two puberty hormones into the bloodstream: FSH and luteinizing hormone (LH).
< 1 year old: < 0, 02 – 5.0 IU/L 1-8 years old: < 0.02 – 0.5 IU/L 9-10 years old: < 0.02 – 3.6 IU/L 11-13 years old: 0.1 – 5 ,7 IU/L 14-17 years old: 0.8- - 8.7 IU/L In young children, high levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) are associated with growth.
GnRH signals the pituitary gland to release two puberty hormones into the bloodstream: LH and follicle stimulating hormone (FSH). LH ad FSH tell the testes and ovaries to make hormones that bring about changes during puberty.
Prepubertal LH concentrations are less than 0.1 IU/L, so LH assays should have a detection limit close to 0.1 IU/L. In cases of central precocious puberty, basal LH concentration usually is ≥0.3 IU/L.
High FSH is a symptom, not a disease or root cause of infertility. However, it often indicates a common but serious problem.
FSH causes ovarian follicles to enlarge and produce estrogen. Over time, fewer and fewer follicles remain to be stimulated and thus estrogen levels decline as a woman ages. This decline in estrogen leads to an increase in FSH as there is not enough estrogen being produced to "turn off" the brain's production of FSH.
Less than 10: This is the ideal FSH range, especially if you are planning on doing fertility treatments. 10-15: FSH levels are a little too high. While they may not impact natural conception, these levels may predict poor response to fertility medications. 15-25: FSH levels are elevated.
FSH was 0.65 ± 0.58 IU/L. During puberty, FSH is increased firstly, followed by INH-B and then LH and T.
Follicle stimulating hormone is one of the hormones essential to pubertal development and the function of women's ovaries and men's testes. In women, this hormone stimulates the growth of ovarian follicles in the ovary before the release of an egg from one follicle at ovulation.
Causes of Early Puberty
These hormones tell the body to make sex hormones- testosterone in males and estrogen in females. For most children, early puberty starts for no known reason. It can run in families. Sometimes there is a problem in the brain, such as an injury, a tumor or an infection.
If you are a woman, high FSH levels may mean you have: Primary ovarian insufficiency (POI), also known as premature ovarian failure. POI is the loss of ovarian function before the age of 40. Polycystic ovary syndrome (PCOS), a common hormonal disorder affecting childbearing women.
While the ideal FSH level depends on your age and life stage, the standard for women trying to conceive naturally is about 10 mIU/ml. Anything higher than 10 may start indicating diminished ovarian reserve. But we've heard misconceptions about how elevated FSH impacts your overall fertility.
While each fertility clinic uses a different assay to measure FSH, most centers say that anything above 15 is considered “abnormal.” On average, patients in the 10-to-15 range have a 50% lower success rate of bringing home a baby than others in their age group with FSH levels of 9.5 or below.
Modern Fertility's reference range categorizes FSH levels between 8.78 mIU/mL and 15 on day 3 of your cycle as “Slightly High” and those above 15 as “High.” If your FSH level is high (>15), that's an indication (again, not a definitive answer) that you could be working with fewer eggs and have fewer follicles ...
Women, when they undergo menopause, lose bone and gain body fat. FSH, which rises at menopause, could be responsible for the weight gain and bone loss that many women experience in their middle ages.
Normal results are: 1.4 to 9.9 mIU/mL (follicular phase) 6.2 to 17.2 mIU/mL (ovulatory peak) 1.1 to 9.2 mIU/mL (luteal phase)
Elevated levels of FSH are associated with unresponsive gonads or hyperfunctioning pituitary adenomas. Low levels of FSH are associated with either hypothalamic or anterior pituitary dysfunction.
Symptoms of high FSH levels usually mimic those of menopause and are related to low oestradiol levels —which is why it's so important to test a range of your reproductive hormones to get to the bottom of symptoms. Symptoms can include: Irregular periods or no periods. Hot flashes and/or night sweats.
Continuous evaluation by cycle phase indicated that recent daily stress was associated with lower total and free E2 and LH during the follicular phase and with lower progesterone and higher FSH during the luteal phase.
In males, FSH stimulates the Sertoli cells resulting in spermatogenesis and LH causes the interstitial Leydig cells of the testes to produce testosterone. The reference range for FSH and LH in adult females is: The reference range for FSH in adult males is 2 – 12 IU/L and for LH is 2 – 9 IU/L.
These hormones cause the first signs of puberty, which are breast development, body odor, underarm hair, pubic hair and acne (pimples). Over time, girls will develop later signs of puberty, such as a growth spurt followed by starting their menstrual periods.
Mean circulating levels of LH, together with the other gonadotropin, follicle-stimulating hormone (FSH), increase beginning before physical changes of puberty begin (11). Inhibin B levels begin to rise concomitant with early gonadal growth (10,12,13).