Progesterone and pregnancy rate
August 14, 2011
The influence of progesterone on the pregnancy rate
A recently published study examined whether the progesterone level measured on the day of ovulation provides a prediction of the expected pregnancy rate.
Several studies had suggested this.
It could clearly be shown that, if the progesterone level on the „trigger day“ is above 1.5 ng/ml, the pregnancy rate is significantly reduced. The study design allowed to attribute this to the progesterone-induced maturation of the uterine lining and not to a reduction in the quality of the eggs.
The authors recommend freezing all cells and embryo transfer in a subsequent natural cycle in the event of a progesterone increase.
Sources:
A. Pellicier, E. Labarta et al.- Endometrial receptivity is affected in women with high circulating progesterone levels at the end of the follicular phase: a functional genomics analysis in Human Reproduction, Vol. 26, No. 7, July 2011