The Effect of Luteal Blood Progesterone Levels on Ongoing Pregnancy Rates

As part of standard in vitro fertilization treatment, Crinone gel will be used starting the next morning following the oocyte pick-up (OPU) as a luteal phase support. On the trigger day, on the day OPU+2/3 (early luteal phase) and on the embryo transfer day (OPU+5, mid luteal phase) blood samples will be taken from patients for evaluating the progesterone levels. Blood samples will be collected at the 6th hour following the morning dose of vaginal progesterone gel. No other intervention will be done to the patients.