LH Blood Test
Alternate Names : ICSH, Luteinizing Hormone
Definition LH blood test measures the amount of luteinizing hormone (LH).
Why is the Test Performed?
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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