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LH (Luteinizing Hormone) Test

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About Our LH (Luteinizing Hormone) Test

Note: Fasting is not required for this test.

This test measures the amount of luteinizing hormone (LH) in the blood. Luteinizing hormone is a hormone secreted by the anterior pituitary gland.

LH helps regulate the menstrual cycle in women, and the production of testosterone in men.


High LH levels in women are found in:

  • Women of childbearing age who are not ovulating
  • Menopausal and postmenopausal women
  • Women with Turner syndrome
  • Ovarian hypofunction


High LH levels in men may be a sign of:

  • Anorchia (testes that are no functioning, or are absent)
  • Genetic problems like Klinefelter syndrome
  • Overactive endocrine glands or tumor formation

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