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19001717 . Progesterone is a hormone primarily produced by the ovaries, specifically by the corpus luteum after ovulation, and to a lesser extent by the adrenal glands and placenta during pregnancy. It plays a crucial role in regulating the menstrual cycle, preparing the endometrium (lining of the uterus) for potential pregnancy, and maintaining a pregnancy once conception occurs. Progesterone is essential for implantation of the fertilized egg and the early development of the fetus.
. In women, progesterone levels are typically tested to evaluate ovarian function, assess ovulation (especially during fertility treatments), monitor pregnancy, or diagnose luteal phase defects (a condition where there is insufficient progesterone for pregnancy maintenance). It can also help in diagnosing miscarriage or ectopic pregnancy when progesterone levels are abnormal.
