Follicle Stimulating Hormone

Follicle-stimulating hormone, or FSH, plays an important role in sexual development and reproduction as it affects the function of ovaries in women and testicles in men. Evaluating the level of FSH is a crucial step in determining reproductive health in both men and women. FSH helps control the menstrual cycles and the production of eggs by the ovaries and facilitates the release of healthy eggs, a process called ovulation. In men, FSH helps control the sperm count and health of the sperm produced by the testicles (testes). FSH levels fluctuate constantly in women, with the highest volumes occurring prior to ovulation. While FSH levels in men normally remain stable after puberty.

The Follicle Stimulating Hormone test can be ordered when a woman is experiencing symptoms of irregular or heavy menstrual periods, has polycystic ovarian syndrome (PCOS), she is facing difficulty in getting pregnant, and/or if problems with the pituitary gland or hypothalamus (an important part of the brain) are suspected. In men, this test can be performed when fertility issues and signs of low testosterone levels, such as decreased sex drive and low muscle mass, are observed. In children, especially teenagers, the Follicle Stimulating Hormone test is done if the doctor suspects a delayed or early puberty. This test may also be performed with other hormone tests such as prolactin, luteinizing hormone (LH), estrogen, and testosterone to give a more comprehensive overview of your sexual and reproductive health.

In women, the preferred time to collect the sample is the second or third day of the menstrual cycle. For men, the test can be done at any time. Before getting tested with the Follicle Stimulating Hormone test let your doctor know about all the medicines that you are taking. Your doctor may ask you to temporarily stop taking certain medications, such as birth control pills to get accurate test results.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. Talk to your doctor about your specific test results. The results will help them determine your medical condition and formulate your overall treatment plan.