Male infertility is a problem that faces increasing interest, and the continuous development of assisted reproduction techniques solicits attempts to identify a precise diagnosis, in particular for idiopathic infertile couples and those undergoing assisted reproductive technique cycles. To date, diagnosis of male infertility is commonly based on standard semen analysis, but in many cases, this is not enough to detect any sperm abnormality. A better understanding of biomolecular issues and mechanism of damaged spermatogenesis and the refinement of the molecular techniques for sperm evaluation and selection are important advances that can lead to the optimization of diagnostic and therapeutic management of male and couple infertility. Faced with a growing number of new proposed techniques and diagnostic tests, it is fundamental to know which tests are already routinely used in the clinical practice and those that are likely to be used in the near future. This review focuses on the main molecular diagnostic techniques for male infertility and on newly developed methods that will probably be part of routine sperm analysis in the near future.
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