How does the success in terms of pregnancy compare between frozen embryos and fresh embryos?
Success of pregnancy from frozen embryos have steadily increased over the years. Not all embryos survive the freezing and thawing process. Quality of embryos being frozen influences how well they survive the thawing process and thus how well they result in pregnancy. A rough estimation is that pregnancy rates of frozen embryos are approximately half of the age-related pregnancy rates with fresh embryos.
