Male factor infertility is present in nearly 50% of IVF cases. Some causes of infertility include abnormal sperm production (ex-azoospermia), motility, hormonal imbalances, and blockages preventing sperm delivery. Most IVF programs recommend doing at least one semen analysis (SA) to assess sperm concentration, motility, and morphology. The SA will help your doctor determine the best treatment option to maximize success.