Effect of leukocytospermia on fertilization and pregnancy rates of artificial reproductive technologies.

The aim of this study was to investigate the fertilization and pregnancy rates of artificial reproductive technologies using semen samples without (<1 x 10(6)/mL) and with (> or =1 x 10(6)/mL) leukocytospermia. The overall fertilization rate was 63.4% (range, 44.4-87.5%) in nonleukocytospermic couples and 64.3% (range, 45.3-100.0%) in leukocytospermic couples, whereas the corresponding pregnancy rates were 34.5% and 50%, respectively. These results show that leukocytospermia may not necessarily have a negative effect on outcome after either in vitro fertilization or intracytoplasmic sperm injection.