This book provides the Assisted Reproduction Technologies (ART) community an update of the fast approaching novel technologies that may allow improved assessment of the reproductive potential of sperm, oocytes and embryos. The reader has access to concise updates on the rapidly developing diagnostic technologies (genomics, transcriptomics, proteomics and metabolomics) and morphological methods which may help us better assess the gametes and embryos. Methodologies are described which enable selection of the best gamete or embryo by invasive and non-invasive diagnostics, as well as the clinical validity of these techniques.