Received April 06, 2020
Accepted October 10, 2020

Objective: The aim of the present study is to investigate the embryo quality (score) after controlled ovarian stimulation for IVF using rFSH or hMG with the GnRH antagonist protocol. Methods: Open randomized single center study was done. Patients were randomized to receive rFSH or hMG according to randomized cards inside a black envelope with the name of the respective treatment following a computer generated list (85 patients were allocated to rFSH group and 83 patients to hMG group). Inclusion criteria were patients with IVF indication and normal ovarian reserve.The embryo evaluation was performed on day three after fertilization based on the Graduated Embryo Score (GES). Results: There were no relevant differences in the demographic characteristics. Difference in pregnancy rates was not observed with 27 (31%) and 25 (30.1%) pregnancies for rFSH and hMG respectively (p = 0.87). The total embryo score was the same for both groups but the best embryo score was significant higher for the rFSH group (77.33 ± 34.0 x 65.07 ± 33.2 p = 0.03). The total number of embryos was statistical different also in favor of the rFSH group (4,17 ± 3.1 x 3.26 ± 2.4 p = 0.04). Conclusion: The total embryo score was the same for both groups but the best embryo score was significantly higher for the rFSH group. Moreover, rFSH was associated with an increased number of embryos.