Following enrollment, patients will undergo ovarian stimulation and oocyte retrieval per routine as previously consented to at the clinic. IVF stimulation protocol will be at the discretion of the patient's individual provider, per routine. Intracytoplasmic Sperm Injection (ICSI) will be performed and embryos will be cultured to the blastocyst stage per routine. There are no changes to the embryology care itself, the only difference within the study is the CO2 level within the incubator pending the patient's randomization.
The purpose of this study is to determine if embryo culture under a single CO2 setting improves blastocyst formation rate.