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Luteinising hormone (LH) - description and reference ranges

What is it?

Luteinising Hormone (LH) is a hormone produced by the pituitary gland in the brain. It is one of the most important hormones in the fertility hormones range, as it stimulates testosterone production in men and controls the ovulation cycles in women. During the menopause the ovaries stop functioning regularly and LH levels rise.

Reference ranges

If your indicative LH concentration is lower than the reference range for our laboratory:

In males, low levels of LH point towards pituitary or hypothalamic issues (a part of the brain that controls the pituitary gland).

In females, this means also issues with pituitary gland or an eating disorder or malnutrition.

Please discuss this result with your GP.

If your indicative LH concentration level is higher than the reference range for our laboratory:

In women, ncreased levels of LH point at ovarian failures, such as underdeveloped ovaries, hormone deficiencies, effects of chemotherapy or autoimmune disease, adrenal issues or thyroid problems.

In men, high LH levels can be due to testicular failure, due to injury or other conditions, such as thyroid.

Please discuss this result with your GP.

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