IRCT2017033133179N1 IRCT 2017-04-08 Vice-chancellor for Research the Technology, Hamadan University of Medical Sciences Comparison of intrauterine injection effects of PRP (platelet-rich plasma) and Hams F10 on the pregnancy outcome in recurrent implantation failure of infertile women after transferring unfrozen embryo Comparison of intrauterine injection effects of PRP (platelet-rich plasma) and Hams F10 on the pregnancy outcome in recurrent implantation failure of infertile women after transferring unfrozen embryo 2016-10-29 anticipated 46 Complete https://irct.ir/trial/25669 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Other design features: Randomization: Here block randomization technique is used. For this purpose we provide 4 paper sheets and on two papers, letter "I" (intervention) is written and on another two papers letter "P" (placebo). Then papers are mixed once and are put in the drawer. After visiting a candidate, one of the papers is given to her whether "I" or "P". By this method candidates are allocating in intervention or placebo group randomly. Blinding: Here only researchers but not the subjects know which subjects are receiving the treatment, therefore it is a single blind study. N/A Infertility. Intervention 1: Intrauterine injection of 0.5 to 1 ml platelet-rich plasma 24 to 36 hours before implantation. Intervention 2: Intrauterine injection of 0.5 to 1 ml Hams F10 24 to 36 hours before implantation.