What is FSH test or follicular stimulating hormone test?

Follicular stimulating hormone test or FSH test
Hormone associated with reproduction, egg growth in women, and sperm growth in men. This hormone has many uses. This test in men and women may be used with other tests, such as luteinizing (LH), testosterone, estradiol or progesterone testing, and help diagnose the following:

Identify the cause of infertility
Detecting conditions associated with ovarian or testicular dysfunction
Help identify pituitary or hypothalamic disorders that can affect the production of FSH.
In women, FSH levels help:

Assessment of menstrual disorders
Predict the onset or confirmation of menopause
In men, FSH is used to determine the cause of low numbers of sperm.

FSH testing in children is also performed to evaluate early or late puberty. At the same time, the LH test can also be measured. Irregular maturity may be a sign of a more serious problem, such as hypothalamus, pituitary gland, ovaries or testicles, or other systems. Measurements of FSH and LH may vary between benign symptoms and actual illness. Once the real diagnosis is done correctly, other experiments will be done in the same way.

When is FSH tested in children?
This test is recommended in girls and boys who do not show puberty symptoms or have signs of early puberty. These symptoms include:

Breast Enlargement in Girls
Grow hair loss
Growth of testicles and penis in boys
Menstruation in girls
Interpreting the results of the FSH test
This test, along with other tests, can provide some information to the physician.

In women
Levels of FSH and LH can help differentiate between the primary and secondary causes of ovarian failure due to inappropriate ovarian function and / or pituitary and hypothalamic gland disorders. High levels of FSH and LH can be attributed to the primary causes of ovarian failure. Improper ovarian function can occur for the following reasons:

Ovarian analysis
Chromosomal disorders such as Turner syndrome
Defective production of steroids by ovaries
Early failure and inappropriate ovarian function can occur for the following reasons:

Exposure to waves
Self-harmed diseases
Chronic ovarian failure can occur due to the following conditions:

Polycystic Ovary Syndrome (PCOS)
Adrenal gland disease
Thyroid gland disease
Ovarian tumor
When a woman enters menopause and stops her ovarian function, FSH hormone shows higher values.
Low levels of FSH and LH are associated with secondary ovarian failure due to pituitary gland disorders and hypothalamic problems. Low levels of FSH are associated with an increased risk of ovarian cancer.

In men
High levels of FSH are due to initial testicular failure. This condition can lead to growth defects in the testicles or lead to testicular damage. Growth flaws like:

Lack of gonadal growth (gonads produce male hormones)
Chromosomal disorders such as Klein Fletcher Syndrome
Testicular insufficiency due to the following conditions:

Viral infections such as mumps
Exposure to radiation
Self-harmed diseases
Germ cell tumor
The lower levels are associated with the pituitary gland and hypothalamus.

In children
High levels of FSH and LH can indicate the following problems:

Brain injury, trauma
Central nervous system tumor
Inflammation of the central nervous system (meningitis and encephalitis)
Brain Surgery
What factors can affect the FSH test result?
Some factors can falsely outweigh the result of this experiment, such as:

Certain medications such as cimetidine cimetidine
Clomiphene drug
Digitalis digitalis
Levodopa drug levodopa
Some factors may show false results less than realistic:

Prevention Pills
Phenytoazine phenothiazines
Hormone Therapy
This hormone exhibits fewer amounts in bardia. Samples needed for an FSH test include blood samples, and occasionally a random urine sample, or a 24-hour urine collection. There is no specific schedule for testing for children and men, but the timing of sampling in women will be related to their menstrual cycle.


  1. https://labtestsonline.org/tests/follicle-stimulating-hormone-fsh


Fatemeh Ghorbani

Fatemeh Ghorbani

فاطمه قربانی هستم، لیسانس ژنتیک، به علوم نوین پزشکی و ایمونولوژی علاقمندم. از شما دوست گرامی بخاطر مطالعه این مقاله و همچنین مجموعه تریتا بخاطر فرصت انتشار مطالبم در راستای کمک به ارتقای دانش کمال تشکر دارم. شاد باشید و سلامت

my name is Fatemeh Ghorbani, I have a B.S in genetics and interested in immunology and medical science. I believe that, even into the smallest acts, should be put our heart, mind and soul. Thank you for reading my article