What is FSH and how does it relate to infertility?
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Many factors can cause infertility in couples. Among the causes of infertility can be high levels of FSH. FSH refers to Follicle Stimulating Hormone.
FSH is produced in the pituitary gland. Present in both women and men, FSH hormone promotes the growth of eggs and sperm respectively. Without any FSH, pregnancy cannot occur. High FSH levels in women can promote infertility. One study suggests that less than 1% of women with high FSH levels we able to conceive.
FSH levels relate directly to the number of eggs a woman has on reserve, referred to as “ovarian reserve.” A simple test of blood can determine FSH levels. An FSH test will result in a number that can be compared to the average level in most women. An FSH level of 10 or below is considered average; a level of 25 or above is considered abnormal. Levels between 10 and 25 are borderline.
When testing for FSH levels, your physician may also test estradiol levels. Estradiol is a type of estrogen, and is secreted by the ovaries. Estradiol levels rise dramatically during ovulation. For this reason, an FSH test is typically taken on the second or third day of your menstrual cycle. Estradiol levels may help determine ovarian reserves. An estradiol level of 75 or above can indicate poor ovarian reserves.
Elevated levels of FSH typically require aggressive treatment for infertility. Often, the most effective treatment is the use of an egg donor, as the abnormal FSH levels may negatively affect eggs.
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