RT Book, Section A1 Walsh, Thomas J. A1 Smith, James F. A2 McAninch, Jack W. A2 Lue, Tom F. SR Print(0) ID 1171187109 T1 Male Infertility T2 Smith & Tanagho's General Urology, 19e YR 2020 FD 2020 PB McGraw Hill PP New York, NY SN 9781259834332 LK accessmedicine.mhmedical.com/content.aspx?aid=1171187109 RD 2024/04/24 AB Infertility is defined as the failure to conceive despite one year of regular unprotected intercourse. Approximately 15% of couples will experience infertility, and of these, 20% will have a male factor that is solely responsible; male factors will contribute in an additional 30% of cases. Generally, male infertility is identified by abnormalities on a semen analysis; however, other issues can contribute to infertility despite normal semen.