During in-vitro fertilization (IVF), what change explains the importance of monitoring serum progesterone levels in the luteal phase following embryo transfer?

💡 Explanation

Progesterone is crucial for maintaining a receptive endometrium conducive to embryo implantation because it induces changes in the uterine lining. Therefore, monitoring progesterone is important, rather than assessing oocyte retrieval, medication adherence, or further follicle development.

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