Men can have a normal semen analysis yet still have impaired fertility due to the presence of antisperm antibodies directed to the head, midpiece, and/or sperm of the ejaculated sperm. These antisperm antibodies can reduce the movement of sperm as well as prevent fertilization of the egg.
This item can only be added to a comprehensive semen analysis or limited semen analysis. It cannot be ordered by itself.
Reference:The Immunology of Male Infertility, Gilbert, BR, Goldstein, M, and Witkin, SS. AUA Update Series, #8, February 1990