<1> routine examination of semen;
 <2>attached male gonadal function tests (such as prostate, Vesiculitis inspection);
 <3>serum reproductive endocrine hormones examination;
 <4>testicular biopsy;
 <5>chromosome examination;
 <6> cytogenetic examination;
 <7>anti-sperm antibodies CASAb inspection.

Dong's Chinese Medicine Research Institute, Shijiazhuang Tel :0311-88468620