MATERIALS AND METHODS

for a role of sperm DNA testing in cases of implantation failure and recurrent miscarriage (RM). Therefore, the aim of this study was to add to this evidence base and examine the relationship between sperm DNA fragmentation in the male partners of women diagnosed with recurrent implantation failure (RIF) following IVF, RM and in men who had become recent fathers. We aimed to examine the effect of sperm preparation by density centrifugation and to assess sperm DNA fragmentation using two commercially available methods