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Luteinizing Hormone (LH)
What's Included?

Your health care provider may advise you to avoid drugs that affect the test.

For women in their reproductive years, the test may need to be done on a specific day of the menstrual cycle. LH blood test measures the amount of luteinizing hormone (LH).

This test may be performed when a disorder associated with abnormal levels of LH is suspected. LH is a protein hormone secreted by the anterior pituitary gland.

In women, an LH surge at mid-cycle causes ovulation. For the next week or so, LH maintains the corpus luteum which synthesizes progesterone. If a woman does not become pregnant, the corpus luteum disintegrates after about 10 days. In men, LH stimulates production of testosterone by the Leydig cells of the testes.

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MyMedLab Product ID: 132