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Luteinizing Hormone (LH) is secreted by the anterior pituitary gland. In women, LH surges during ovulation, triggering egg release and maintaining the corpus luteum. In men, LH stimulates Leydig cells in the testes to produce testosterone, supporting reproductive and sexual functions.
A venous blood sample is tested for serum LH levels. Results should be interpreted with FSH, Estradiol, Testosterone, and clinical history.
Q1: What is the role of LH in women?
A: LH triggers ovulation and supports corpus luteum function, essential for fertility.
Q2: What does an abnormal LH/FSH ratio mean?
A: A high ratio is often seen in PCOS; a low ratio may suggest hypothalamic-pituitary dysfunction.
Q3: What does low LH mean in men?
A: It may indicate testicular failure or pituitary insufficiency, requiring further evaluation.
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