Dear Editor,
Reproductive problems affect 8%-12% of human populations worldwide;40%-50% of all infertility cases are due to the male,and up to 2% of men have suboptimal sperm quality) Semen analysis is the first test in male infertility clinics,but interpretation of the results is not straightforward,with the significance of results for predicting fertility after intrauterine insemination (IUI),intracytoplasmic sperm injection (ICSI),and in vitro fertilization (IVF) differing between studies.2 Classical semen evaluation treats seminal variables individually,so that whereas poor semen quality is an indicator of subfertility,3 good semen quality is no guarantee of fertility.