Where is fsh made in the body

After the procedure, the elastic band is removed. Once the blood has been collected, the needle is removed and the area is covered with cotton or a bandage to stop the bleeding. Collecting the blood for this test will only take a few minutes.

Collecting a sample of blood is only temporarily uncomfortable and can feel like a quick pinprick. Afterward, there may be some mild bruising, which should go away in a few days. The blood sample will be processed by a machine.

The results usually are available after a day or two. The FSH test is considered a safe procedure. However, as with many medical tests, some problems can occur with having blood drawn, like:.

Having a blood test is relatively painless. Still, many kids are afraid of needles. Explaining the test in terms your child can understand might help ease some of the fear. There are very rare pituitary conditions that can raise the levels of follicle stimulating hormone in the bloodstream.

This overwhelms the normal negative feedback loop and can rarely cause ovarian hyperstimulation syndrome in women. Symptoms of this include enlarging of the ovaries and a potentially dangerous accumulation of fluid in the abdomen triggered by the rise in ovarian steroid output , which leads to pain in the pelvic area.

In women, a lack of follicle stimulating hormone leads to incomplete development at puberty and poor ovarian function ovarian failure. In this situation ovarian follicles do not grow properly and do not release an egg, thus leading to infertility. Since levels of follicle stimulating hormone in the bloodstream are low, this condition is called hypo gonadotrophic- hypo gonadism.

Sufficient follicle stimulating hormone action is also needed for proper sperm production. In the case of complete absence of follicle stimulating hormone in men, lack of puberty and infertility due to lack of sperm azoospermia can occur.

Partial follicle stimulating hormone deficiency in men can cause delayed puberty and limited sperm production oligozoospermia , but fathering a child may still be possible. If the loss of follicle stimulating hormone occurs after puberty, there will be a similar loss of fertility. About Contact Events News. Search Search. You and Your Hormones.

Students Teachers Patients Browse. Human body. Home Hormones Follicle stimulating hormone. Follicle stimulating hormone Follicle stimulating hormone is produced by the pituitary gland. It regulates the functions of both the ovaries and testes. Lack or insufficiency of it can cause infertility or subfertility both in men and women.

This LH peak triggers a complex set of events within the follicles that result in the final maturation of the egg and follicular collapse with egg extrusion. Ovulation takes place 28 to 36 hours after the onset of the LH surge and 10 to 12 hours after LH reaches its peak. The cells in the ovarian follicle that are left behind after ovulation undergo a transformation and become the corpus luteum.

In addition to estrogen, they now produce high amounts of progesterone to prepare the lining of the uterus for implantation. The luteal phase, or second half of the menstrual cycle, begins with ovulation and lasts approximately 14 days — typically 12 to 15 days.

During this period, changes occur that will support the fertilized egg, which is called an embryo, should pregnancy result. The hormone responsible for these changes is progesterone, which is manufactured by the corpus luteum. Under the influence of progesterone, the uterus begins to create a highly vascularized bed for a fertilized egg. If a pregnancy occurs, the corpus luteum produces progesterone until about 10 weeks gestation.

Otherwise, if no embryo implants, the circulating levels of hormone decline with the degeneration of the corpus luteum and the shedding of the lining of the uterus endometrium , leading to bleeding. The lining of the uterus, or endometrium, prepares each month for the implantation of an embryo. This preparation occurs under the influence of estrogen and progesterone from the ovary.

If no pregnancy develops, the endometrium is shed as a menstrual period, about fourteen days after ovulation. UCSF Health medical specialists have reviewed this information. It is for educational purposes only and is not intended to replace the advice of your doctor or other health care provider.

We encourage you to discuss any questions or concerns you may have with your provider. Learn the steps of conception and how each works including, sperm transport, egg transport, fertilization and embryo development, and implantation. Maternal age is probably the most significant factor related to a woman's ability to conceive.

Learn about other infertility risk factors here. Your overall health is a reflection of your reproductive health. Give yourself a long and healthy life.