ABSTRACT
INTRODUCTION Once idiopathic male subfertility has been diagnosed as a contributor to the subfertility of a couple therapeutic options should be discussed. One option is to abstain from treatment when the chance of spontaneous conception is considered moderate or good (1,2). When on the other hand sperm counts are extremely low immediate treatment might be offered with intracytoplasmatic sperm injection (ICSI) (chapter 10). For couples with male subfertility, reasonable sperm counts and moderate to poor prognosis of spontaneous conception intrauterine insemination (IUI) is a favorable treatment option.
