Progesterone Levels Prior to Embryo Transfer
The Role of Progesterone Progesterone’s one function is preparing the endometrium to receive an implanted embryo. If implantation does not occur, estrogen and progesterone levels drop, the endometrium breaks down, and menstruation occurs. If a pregnancy occurs, progesterone is produced in the placenta, and levels remain elevated throughout the pregnancy. The combination of high estrogen […]