Luteinizing Hormone (LH)

Luteinizing hormone is also known as Interstitial Cell Stimulating Hormone. This test helps to evaluate fertility issues. It helps in evaluating the health of reproductive organs (testicles or ovaries). In women, this test helps to determine ovulation time. This test also helps to evaluate the function of the pituitary gland. The Luteinizing Hormone (LH) test is done: • In case a woman is unable to get pregnant • In case of irregular or heavy menstrual periods in a woman • To track ovulation during the menstrual cycle • In case of males who have low sperm count, low muscle mass, or decreased sex drive • In case of symptoms of pituitary or hypothalamic disorder • In case of early or delayed puberty in children

Frequently asked questions

How is the blood sample taken?

To take the blood sample, a tourniquet (elastic) band is placed tightly on the upper arm. The patient is asked to make a fist. This helps in the buildup of blood filling the veins and it becomes easy to collect the blood. The skin is cleaned before inserting the needle in the vein in order to prevent bacteria from entering. The needle is then inserted into the vein in the arm and the blood sample is collected in the vacutainer.

What other tests are advised along with the LH test?

Other tests that are advised along with LH test include follicle-stimulating hormone test, testosterone test, estradiol test, and progesterone test.

What are the developmental defects that can cause an increase in levels of LH?

The developmental defects that can cause an increase in levels of LH include failure to develop ovaries, chromosome disorder such as Turner syndrome, and defects in the production of steroids by ovaries.

What kind of damage to the ovaries can cause an increase in levels of LH?

Damage to ovaries can occur due to exposure to radiation, chemotherapy, and autoimmune diseases. In these cases, the levels of LH increase.

What conditions can affect the function of the ovary leading to rising in levels of LH?

The conditions that can affect the function of the ovary leading to rising levels of LH include polycystic ovary syndrome (PCOS), adrenal disease, and thyroid disease.