FSH and LH are pituitary hormones that act on the ovaries in women and testes in men, regulating sex hormone production, ovulation, and sperm production. Their levels and ratio provide important diagnostic information about reproductive system function.
This combined test is used to evaluate infertility, irregular or absent menstrual periods, polycystic ovary syndrome, premature ovarian failure, suspected menopause, low testosterone in men, and delayed or precocious puberty. Patterns of FSH and LH together help distinguish ovarian or testicular problems from pituitary or hypothalamic causes. Sample type is serum.
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