This prospective study will evaluate the efficacy of Diafert as an adjunct to morphological assessment in predicting embryos' potential to develop to the blastocyst stage on Day 5.

Inclusion Criteria:

• Provide written informed consent before initiation of any study procedures
• Be a female outpatient, ≥ 18 years of age at the time of informed consent
• Have at minimum 10 mature egg follicles as of the last transvaginal ultrasound following hormonal stimulation
• Eligible to allow embryos to develop through day 5 before implantation or freezing

Exclusion Criteria:

• Presence of ovarian endometriotic cyst
• Presence or history of diagnosed severe endometriosis (i.e. stage IV the revised American Fertility Society classification for endometriosis).
• Need for pre-implantation genetic diagnosis/screening of embryos
• Use of time-lapse embryo imaging
• Employee or immediate relative of an employee of Forest Research Institute, Inc., any of its affiliates or partners, or the study center

Female outpatients involved in an assisted reproduction procedure.