Serum progesterone in predicting pregnancy outcome after assisted reproductive technology

Purpose: Our purpose was to determine whether serum progesterone predicts p regnancy outcome after super-ovulation. Methods: One hundred twenty-three consecutively, pregnant patients were div ided into three groups: group I, 55 patients following superovulation for a ssisted reproductive technologies; group II, 23 patients after correction o f oligoovulation; and group III, 45 patients who conceived spontaneously. W hen beta-human chorionic gonadotropin was positive, progesterone was measur ed on the same serum sample. A serum progesterone level of 45 mu m/L was se t to differentiate between nonviable pregnancy and ongoing pregnancy Results: In group I, zero (0%) of 38 ongoing pregnancies and 10 (59%) of 17 nonviable pregnancies were observed with a progesterone level of < 45 mu m /L [14.2 ng/ml (P < 0.001)]. In group II, 4 (27%) of 15 ongoing pregnancies and 5 (63%) of 8 nonviable pregnancies had a progesterone level of < 45 mu m/L (P = NS). In group III, 10 (42%) of 24 ongoing pregnancies and 15 (71% ) of 21,nonviable pregnancies Were observed with a progesterone level of <4 5 mu m/L (14.2 ng/ml) (P = NS). Conclusions: A serum progesterone level of < 45 nM predicts nonviable pregn ancy after superovulation for assisted reproductive technology.