Oldest human embryo used in a successful pregnancy

Oldest human embryo used in a successful pregnancy
Who
Lydia Ridgeway, Timothy Ridgeway
What
30:192 year(s):day(s)
Where
United States ()
When

The oldest human embryo used in a successful pregnancy is 30 years and 192 days old, as verified with the births of twins Lydia and Timothy Ridgeway (USA), on 31 October 2022.


The embryos were created using in vitro fertilization (IVF) and stored in liquid nitrogen at roughly -196 °C (-323 °F) on 22 April 1992. These were later donated to the National Embryo Donation Center (NEDC) in Knoxville, Tennessee, in 2017, before being passed on to parents Rachel and Philip Ridgeway in Vancouver, Washington, USA. Rachel and Philip credit Dr. John David Gordon, and Embryologist Sarah Atkinson for their great support in this achievement.