Texas Fertility Center Round Rock

luteal phase defect

Progesterone Levels

Progesterone Levels

Progesterone is an important hormone in a woman’s reproductive cycle. It is critical in maintaining the uterine lining so that an early pregnancy can grow normally. It is produced by the follicle (egg sac) that originally released the egg that fertilized and implanted in the uterus.
Before ovulation, progesterone is found in low levels in the blood.

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