The oldest sperm used in successful IVF treatment was 22 years 5 months, achieved by Trevor and Teresa Yoxall (both UK) at St. Mary’s Hospital, Manchester, UK, on 27 July 2007.

Mr. Trevor Anthony Yoxall (born 02/10/1964) had his sperm frozen on 18 February 1985. These sperm were used in their assisted conception treatment and eggs from his partner Teresa Yoxall (born 08/02/1969) were successfully fertilised on 29 September 2006. Embryos were created from this successful cycle, which were cryopreserved. Two frozen embryos were transferred in to Teresa’s womb on 10 July 2007 and she had a positive pregnancy test on 27 July 2007. Amelia Caitlin Yoxall was born on 1 March 2008.