FSH secreted by the pituitary gland stimulates the growth of ovarian follicles. Blood levels of FSH are usually measured on the third day of menstruation to determine the amount of storage and reserve of ovarian follicles for fertility.
In the following, the doctors of our medical group will say that what is the importance of FSH test in determining the readiness of women to get pregnant?
By reading this we will know that
What is a normal FSH level to get pregnant?
What is Follicle Growth Hormone or FSH?
Around the back of our nose is a small gland called the pituitary gland, from which a hormone called follicle-stimulating hormone is secreted and enters the bloodstream. This hormone, called FSH for short, reaches the ovaries and is responsible for the process of growth and maturation and maturation of the follicle.
When the follicle matures, the follicle ruptures and the egg is released, and this egg is released from the follicle, which, if fertilized with sperm, will form the first new living cell.
With this explanation, the importance of having enough FSH in predicting female fertility becomes somewhat clear.
When the follicle reaches, the amount of estrogen produced by the ovary will be at its highest.
In a woman with a good supply of ovarian follicles, enough ovarian hormones will be released. Having enough ovarian hormones in the blood, which indicates good storage of the ovaries, reduces the secretion of pituitary FSH, which stimulates the ovarian follicles.
Conversely, in a woman who does not have enough ovarian follicle storage, the secretion of ovarian hormones also decreases, so the pituitary gland, in response to low blood levels of ovarian hormones, increases FSH secretion, which may cause the ovarian follicles to grow by flogging this stimulating hormone, and release eggs.
So in a nutshell:
- Proper ovarian reserve is associated with adequate blood levels of ovarian hormones, such as estrogen. In addition, blood FSH levels are low and a woman has no problem conceiving.
- Inadequate ovarian reserve is associated with low blood levels of ovarian hormones and the pituitary gland will stimulate the follicles in the ovary by increasing the secretion of FSH in response to low levels of ovarian hormones.
So if the FSH blood level is high on the third day of menstruation, the ovarian reserves are insufficient.
Now the question arises:
What is a normal FSH level to get pregnant?
Due to the different cysts and methods of measuring FSH, the detection intervals for proper and inappropriate ovarian reservation are different, but based on reliable and valid laboratory methods and cysts, the numbers will be as follows:
Your test must be performed on the third day of menstruation in order to be able to be cited.
In this case:
- Doses less than 15mIu / ml FSH are most likely to conceive (group A.)
- Doses higher than 25mIU / ml FSH have the lowest chance of becoming pregnant (group B.)
- The chance of pregnancy for women with values between 15 mIU / ml — 9.24 mIU / ml FSH is lower than group A and higher than group B.
Sometimes on the third day of menstruation, the blood FSH level is normal but the level of estradiol (a form of the female hormone estrogen) is abnormally high. This condition should be considered equivalent to poor ovarian reserve.
There is a misconception among women that we should take an FSH blood test to delay our pregnancy, and if our ovarian reservation is good, we should get pregnant later. You need to know that this is a misconception and normal FSH is not a good reason to delay your pregnancy.
Blood FSH test time
It is very important at what time of your cycle you tested, FSH is a hormone whose amount changes over a cycle, so the interpretation of the number obtained depends entirely on whether you took the test on a particular day.
The best time to interpret the test and determine the ovarian reserve is the third day of menstruation, That is, count the first day of bleeding as the first day of menstruation and go to the third day of menstruation for a test.
Sometimes doctors consider it appropriate to test between the second and fourth days of menstruation, but an accurate interpretation will depend on the test on the third day of menstruation.
In addition to the FSH level test, there are other tests that can be used to check ovarian reservation to some extent, such as:
- Antral follicle count ultrasound exam:
With the help of vaginal ultrasound, with a special technique, the number of follicles at a certain level of the ovary is counted. Due to differences in the operator, the results may be different.
- Anti Müllerian hormone(AMH):
With a simple blood test in every day of the menstrual cycle the amount of this hormone is determined.
AMH more accurately determines potential ovarian reserves.