This concise volume proposes a standardized approach to the investigation of infertility. The volume provides clear guidelines and a logical sequence of steps which will quickly lead the clinician or physician to an accurate diagnosis of the underlying cause of infertility. This standardized approach to the management of infertility will lead to more, efficient, systematic and economic care for the infertile couple. The diagnostic charts, which may be photocopied, provide an unambiguous route to diagnosis of the underlying cause of infertility, whilst the text fully explains and describes the essential clinical tests. The volume summarises the results gained from the study of more than 10,000 infertile couples, who were investigated as part of the WHO's programme to counter the widespread personal distress caused by infertility. It is hoped that the standardized approach presented here will go some way towards countering this major problem.