The Effect of Luteal Blood Progesterone Levels on Ongoing Pregnancy Rates

2019-10-21 12:45:26 | BioPortfolio


Progesterone (P4) is essential for the secretory development of endometrium and the maintenance of early pregnancy. In the luteal phase following controlled ovarian stimulation in in vitro fertilization (IVF) treatment, P4 profile is completely different from natural cycles (Fauser, 2002).

Since the optimal luteal P4 levels are not well known, in normal IVF treatment a standard regime of exogenous P4 is given without considering the ovarian response for stimulation and the steroid levels in luteal phase. In 2005 Humaidan et al, showed that following the fresh embryo transfer, low luteal P4 levels (39 nmol/l) has a negative impact on ongoing pregnancy rates (Humaidan, 2005). In the following randomized controlled trials (RCTs), the use of exogenous human chorionic gonadotropin (hCG) after gonadotropin releasing hormone (GnRH) agonist trigger as a luteal phase support (Humaidan, 2010, 2013), the mid luteal P4 levels increased to 77-409 nmol/l and birth rates per transfer raised to %24.

In the light of these, it is essential that the progesterone levels in luteal phase is above the certain threshold for induction of the normal secretory development of endometrium following the IVF treatment and for the maintenance of pregnancy.

The implantation window is defined as that period when the uterus is receptive for implantation of the free-lying blastocyst. For maximal effectiveness of assisted reproductive technologies in women, it is important to know the optimal time for embryo transfer which implies a need to predict the period of uterine receptivity. Blood progesterone levels can be an indirect indication for implantation window and the embryo transfer timing.

The aim of this study is to investigate the effect of early and mid luteal progesterone levels on ongoing pregnancy rates and to determine the optimal luteal P4 levels in IVF cycles following the fresh blastocyst transfer in order to improve the reproductive outcomes.

Study Design


Luteal Phase Progesterone Levels


Taking blood samples for analyzing progesterone levels


Hacettepe University School of Medicine, Department of Ob/Gyn




Hacettepe University

Results (where available)

View Results


Published on BioPortfolio: 2019-10-21T12:45:26-0400

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Medical and Biotech [MESH] Definitions

The period in the MENSTRUAL CYCLE that follows OVULATION, characterized by the development of CORPUS LUTEUM, increase in PROGESTERONE production by the OVARY and secretion by the glandular epithelium of the ENDOMETRIUM. The luteal phase begins with ovulation and ends with the onset of MENSTRUATION.

PROGESTERONE-producing cells in the CORPUS LUTEUM. The large luteal cells derive from the GRANULOSA CELLS. The small luteal cells derive from the THECA CELLS.

The periodic shedding of the ENDOMETRIUM and associated menstrual bleeding in the MENSTRUAL CYCLE of humans and primates. Menstruation is due to the decline in circulating PROGESTERONE, and occurs at the late LUTEAL PHASE when LUTEOLYSIS of the CORPUS LUTEUM takes place.

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The taking of a blood sample to determine its character as a whole, to identify levels of its component cells, chemicals, gases, or other constituents, to perform pathological examination, etc.

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