Progesterone, a key hormone in pregnancy

There are different hormones that make it easier to become pregnant. Among the most important of these is progesterone, a hormone that promotes pregnancy. According to recent studies, blood levels of progesterone after embryo transfer are directly related to success rates in reproductive treatments. Thus those patients with lower progesterone levels show a relatively lower rate of evolutionary pregnancy.

How is the endometrium prepared for embryo transfer?

There are two different ways to prepare the endometrium for embryo transfer and both have the same probability of pregnancy. The first is the natural cycle, in which the hormones produced by the ovaries prepare the endometrium. The second is hormone replacement therapy, in which the endometrium is prepared through the administration of progesterone by means of patches or pills.

Monitoring of progesterone after embryo transfer

In the natural cycle, progesterone levels after embryo transfer are usually efficient. However, in some cases in the hormone replacement cycle, progesterone absorption levels are not optimal to maintain a pregnancy. For this reason, it is necessary to measure progesterone frequently soon after starting progesterone administration.

Minimum adequate progesterone levels

There are different studies, such as Cedrin Drunein et al (2019), that have been conducted with the aim of measuring the minimum adequate blood levels of progesterone for the development of pregnancy. And although the results are different, all publications establish a direct relationship between progesterone levels and the possibility of achieving an evolutionary pregnancy.