Success rates for pregnancy using sperm donation are dependent on many factors including the age and health of the recipient. For this reason giving an accurate estimation of success can be misleading.
Generally, it is 10 to 15% per menstrual cycle using ICI, and 15-20% per cycle for IUI. In IUI, about 60 to 70% have achieved pregnancy after 6 cycles.
As seen on graph below, pregnancy rate also depends on the total sperm count, or, more specifically, the total motile sperm count (TMSC), used in a cycle. It increases with increasing TMSC, but only up to a certain count, when other factors become limiting to success. This shows the importance of the donor semen having a high sperm count and can be checked using a male sperm count test such as the Fertilcount male fertility test.
For those using IUI and IVF at a fertility clinic, the following information gives data for success rates within the UK for the year 2003-2004:
3158 women underwent a total of 7,350 cycles of treatment using donor sperm. (HFEA) Of these, 782 women went on to have a successful birth, resulting in a total of 825 children born as a result of DI that year.
The success rate depends on the age of the woman if she is using her own eggs. Statistics show that for women under the age of 35 the success rate is about 14 per cent, falling to 8 to 9 per cent for women aged between 35 and 39, and to 4 to 5 per cent for women aged between 40 and 42 (HFEA).